Business School€¦ · Web viewQiuyang Chen* Huu Nhan Duong. Manapon Limkriangkrai. This...
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Institutional Order Illiquidity and Expected Stock Returns
Qiuyang Chen*
Huu Nhan Duong
Manapon Limkriangkrai
This Version: 10th September 2016
JEL Classifications: G10, G20, G24
Keywords: Institutional Price Impact; Order Illiquidity; Asset Pricing
Authors are from the Department of Banking and Finance, School of Business and Economics, Monash University, Melbourne, Australia.
*Corresponding author: Qiuyang Chen, Department of Banking and Finance, Monash Business School, Monash University, 900 Dandenong Road, Caulfield East, 3145, Australia. Telephone: (+613) 9903 4078; Email: [email protected].
Acknowledgements: We are grateful to the Securities Industry Research Centre of Asia-Pacific (SIRCA) for providing the data used in our study. We are also grateful for helpful comments from Avanidhar Subrahmanyam, Henk Berkman, Petko Kalev, Phil Gray, Te-Feng Chen, Eric Lam, Clark Liu, Talis Putnins, and Stephen Brown. All remaining errors are our own.
Institutional Order Illiquidity and Expected Stock Returns
Abstract
This study proposes a new approach for estimating the adverse selection component of
illiquidity, and links the new measures to asset pricing. Motivated by Kyle’s (1985) price impact
model, we decompose the aggregate price impact into institutional and individual components by
conditioning order flows on the identity of different investor classes. The asset pricing analysis
shows that the positive illiquidity premium is predominantly driven by the institutional order
illiquidity, and that individual order illiquidity plays no role in explaining stock returns. Further
analyses on the buy- and sell- component of institutional/individual order illiquidity suggest that
institutional sell-order illiquidity is the most significantly priced price impact variable. The
significant pricing of institutional order illiquidity is supported by both the information and
liquidity channels of institutional trading.
JEL Classifications: G10, G20, G24
Keywords: Institutional Price Impact; Order Illiquidity; Asset Pricing
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Preface
Paper title: Institutional Order Illiquidity and Expected Stock Returns
Supervisors: Dr. Huu Nhan Duong and Dr. Manapon Limkriangkrai
Extant literature on the return-illiquidity relation based on the adverse selection cost uses
illiquidity measures that assume a symmetric relation between order flows and price changes
(see measures, such as Glosten and Harris, 1988; Brennan and Subrahmanyam, 1996; Huang and
Stoll, 1997; and Madhavan Richardson, and Roomans, 1997). The price impact approach of
estimating the adverse selection cost is supported by Kyle’s (1985) seminal theory. However,
one embedded assumption in Kyle’s model is that the market maker cannot distinguish different
types of traders (i.e., informed traders and noise traders) behind the bulk order submission in
each round of the auction. As a result, the lambda (i.e., the inverse measure of the market depth)
not only measures the price impact of informed traders, but also takes into account of the bid-ask
spread generated by noise traders. Hence, the aggregate lambda measure may cast some concerns
regarding the true effect of the adverse selection premium required by liquidity providers on
asset returns. In this study, we propose a new approach for estimating the adverse-selection
component of illiquidity and relate the new measures to asset prices.
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1. Introduction
The relation between liquidity and returns is one of the most researched areas in the finance
literature. Several studies demonstrate the importance of liquidity as a determinant of expected
returns (see, for example, Amihud and Mendelson, 1986; Brennan and Subrahmanyam, 1996;
Amihud, 2002; Jones, 2002; and Chordia, Huh and Subrahmanyam, 2009 ).1 One important
strand of the liquidity pricing literature focuses on the role of the adverse selection component of
illiquidity in explaining stock returns. As illustrated in Bagehot (1971), Kyle (1985) and Glosten
and Milgrom (1985), the adverse selection (i.e., the information asymmetry) is considered to be
the primary source of illiquidity due to the presence of informed traders. Subsequently, Brennan
and Subrahmanyam (1996) and Chordia, Huh, and Subrahmanyam (2009) find that the adverse
selection cost of illiquidity is priced in the cross-section of expected stock returns with large
economic significance.
Prior studies on the pricing of the adverse selection cost of illiquidity principally use
price impact measures that assume a symmetric relation between order flows from different
groups of investors and price changes. In this study, we allow for the asymmetric relation
between of order flows from institutional and individual investors groups and price changes. By
doing so, we provide the first empirical evidence on the asset-pricing implications of institutional
and individual price impacts. The distinction between institutional and individual order flow is
crucial, since two classes of investors differ substantially in terms of their possessions of
information (Nofsinger and Sias, 1999; Grinblatt and Keloharju, 2000; Griffin, Harris, and
Topaloglu, 2003; and Linnainmaa and Saar, 2012). Therefore, the institutional and individual
order illiquidity (i.e., the ‘lambda’) provide stronger empirical underpinnings to the theoretical
implications for the effects of the adverse selection cost of illiquidity on asset prices.
We utilize a unique intraday dataset that contains the identities of brokers involved in
every transaction in the Australian Securities Exchange (ASX) over an extended sample period
from January 1996 to December 2012. Motivated by Linnainmaa and Saar (2012) and Fong,
Gallagher and Lee (2014), we classify institutional and individual order flows as trades executed
1 For further evidence on the relation between liquidity and expected returns, see, among others, Datar, Naik and Radcliffe (1998), Jacoby, Fowler and Gottesman (2000), Easley, Hvidkjaer, and O’Hara (2002), Huh (2014), and Chung and Huh (2016).
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through institutional and retail brokers, separately. To compare the relative importance between
institutional and individual lambdas in asset pricing, we use the empirical asset pricing
framework developed by Brennan, Chordia, and Subrahmanyam (1998). That is, individual stock
returns are adjusted for Fama and French (1993) factors as well as Carhart (1997) momentum
factor to alleviate the errors-in-variable problem in cross-sectional regressions. Moreover, we
also use the weighted least-squares (WLS) regression recommended by Asparouhova,
Bessembinder and Kalcheva’s (2010) to correct for potential market microstructure biases in our
asset pricing analyses.
Our key findings are summarized as follows: First, we show that institutional lambda is
priced more significantly than individual lambda in the cross-section of expected stock returns.
The prominence of institutional lambda is robust to the estimations of alternative price impact
models, different trade-size classifications of order flows, and different subsample periods. More
importantly, after controlling for the effect of institutional lambda, individual lambda is not
significantly priced in stock returns. Furthermore, the pricing of institutional lambda is also
economically significant. For the largest firm size quintile, the long-short portfolio sorted on
institutional lambda yields a return spread of 4.68% per annum. Our finding is consistent with
the theoretical implications in Kyle (1985), Glosten and Milgrom (1985), Easley and O’Hara
(1987), Glosten and Harris (1988), and Chordia et al. (2009), which suggest that only informed
traders observe the fundamental value of the risky security, and that the impact of institutional
trades generates a permanent price change as new information is incorporated into security
prices.
In order to dissect the underlying sources behind the prominence of institutional lambda,
we decompose the lambda into more fundamental elements by using the asymmetric illiquidity
framework developed by Brennan, Chordia, Subrahmanyam, and Tong (2012) and Brennan,
Huh, and Subrahmanyam (2013). Specifically, institutional and individual lambdas are
decomposed into their corresponding buy and sell components. When we regress stock returns
on these four lambda components (i.e., institutional and individual buy/sell lambdas), we find
that the institutional sell lambda is the most significantly priced illiquidity variable. This finding
is consistent with the early theoretical work on institutional asset fire sales by Shleifer and
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Vishny (1997) and Gromb and Vayanos (2002). Their theoretical models suggest that when
financial constraints, such as margin calls and investor redemptions, are imposed on institutional
investors, they can be forced to liquidate their positions prematurely. The adverse price impact
induced by institutional sell-offs significantly reduce liquidity in the market and result in further
price reduction.2 Thus, institutional sell-side orders are particularly sensitive in illiquid stocks,
and as such, institutional investors are willing to pay higher illiquidity premium on their sell-side
orders.
Having established a strong positive relation between institutional lambda and stock
returns, we further investigate the potential channels behind this relation. We posit that the effect
of institutional lambda on stock returns can be attributed to both the information and liquidity
channels of institutional trading. The information and liquidity hypotheses are examined
extensively in the literature. Holthausen, Leftwich, and Mayers (1990) and Chan and Lakonishok
(1993) find that most of the price impact induced by institutional block trading is permanent, and
the permanent price effect is driven by the information content of institutional trades. On the
other hand, Lakonishok, Shleifer, and Vishny (1992), and Nofsinger and Sias (1999) document a
temporary liquidity impact of institutional trading on stock returns, and the liquidity effect tends
to dissipate quickly in the short-run.
We utilize two types of events to test the information and liquidity channels of
institutional lambda effect, namely, the unscheduled corporate announcement and the
announcement of quarterly S&P/ASX 200 index deletion. To test the information channel, we
investigate the relation between the pre-announcement institutional/individual lambda and the
three-day announcement-period cumulative abnormal returns. We focus on unscheduled
corporate announcements, given that the absence of predetermined announcement dates makes
the announcement returns more difficult to be inferred from the public information. This unique
feature of the unscheduled announcement allows us to detect the information content of
institutional/individual trading induced price impact. Our analyses show that the pre-
announcement institutional buy lambda (sell lambda) has a positive (negative) relation with the
three-day announcement return. In contrast, the pre-announcement individual buy and sell 2 Brunnermeier and Pedersen (2009) show that a negative shock on the aggregate market liquidity can lead to losses on liquidity providers’ initial positions (e.g., market makers and other financial intermediaries), thus, forcing them to continue to sell. Therefore, on average, institutions pay higher illiquidity premium to exit their positions.
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lambdas have no effect on the forthcoming announcement return. These results support the
information channel on the effect of institutional lambda on stock returns.
The information effect of institutional lambda does not rule out the channel of the
liquidity effect. The short-term illiquidity premium often arises from the difficulty of
institutional investors locating the willing counterparties whom they can transact with
immediately. To test for the liquidity channel, we focus on the institutional trading surrounding
the announcement of quarterly S&P/ASX 200 index deletion. The announcement date of index
deletion is publicly accessible and certain institutional investors (e.g., index funds) are forced to
rebalance their portfolios around the announcement date. Hence, this provides us an ideal setting
to gauge the behavior of the price pressure generated by institutional trading when changes to the
index composition are announced. More importantly, the announcement of the index rebalance
itself is information-free, therefore, the trading induced price pressure surrounding the
announcement date reflects the institutional demand for liquidity immediacy. In the analysis, we
observe an immediate and sharp decrease (increase) in institutional buy (sell) lambda upon the
announcement of quarterly S&P/ASX 200 index deletion. In contrast, individual buy and sell
lambdas do not exhibit any particular patterns after the index deletion list is announced. Hence,
the contemporaneous relation between the announcement of index deletion and changes in
institutional lambda provides evidence supporting the liquidity hypothesis.
Our study makes two important contributions to the literature on the pricing of the
adverse selection cost of illiquidity. First, to the best of our knowledge, this study is the first to
examine the asset-pricing implications of institutional versus individual price impacts. Standard
price impact models assume a symmetric relation between the aggregate order flow and price
changes (see, for example, Kyle, 1985; Glosten and Harris, 1988; Brennan and Subrahmanyam,
1996; Huang and Stoll, 1997; and Madhavan et al., 1997). The lambda measure estimated by the
conventional approach does not differentiate the investor identity behind the order submission,
hence, the aggregate price impact measure could potentially obscure the true effect of the
adverse selection component of illiquidity on asset prices. By allowing an asymmetric relation
between institutional and individual order flow and price changes, this study shows that the
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adverse selection cost induced by institutional price impact is the predominant driver behind the
illiquidity premium.
Second, our paper also sheds light on the relative importance of buy- and sell-order
illiquidity for different classes of investors in asset pricing. As highlighted by Brennan et al.
(2012) and Brennan et al. (2013), the equilibrium rates of return are more sensitive to seller-
initiated trades, but not sensitive to buyer-initiated trades. Our empirical results further extend
this emerging literature by showing that while both institutional and individual sell lambdas are
priced more significantly than the corresponding buy lambdas, the institutional sell lambda is the
most significantly priced variable among all other components of the adverse selection cost of
illiquidity. Furthermore, our findings of information and liquidity channels of institutional
lambda effect also complements the literature on the influence of institutional trading on stock
prices (see, for example, Holthausen et al., 1990; Lakonishok et al., 1992; Chan and Lakonishok,
1993; and Nofsinger and Sias, 1999).
The remainder of the paper is structured as follows: Section 2 outlines the theoretical
motivation and empirical estimations for our price impact model. Section 3 describes the data
and sample. Section 4 reports portfolio sorting analyses. Section 5 presents the result of asset
pricing tests. Section 6 investigates potential channels behind the prominence of institutional
lambda. Section 7 concludes the paper.
2. The Estimation of Institutional and Individual Lambdas
The first subsection explains the intuition behind the proposed lambda estimates, while the
second subsection introduces the price impact model applied in this study to estimate lambdas.
2.1 The Theoretical Motivation of Kyle’s (1985) Lambda
In Kyle’s (1985) model, the process of trading is modelled as a two-period auction, and a risky
security is traded among three types of traders: risk-neutral informed traders who have superior
information about the fundamental value of the risky security, liquidity traders (i.e., noise
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traders) who trade securities for idiosyncratic or liquidity reasons (i.e., their demands are
exogenous), and a risk-neutral market maker who faces a perfect competition. The competitive
market maker sets a market clearing price that absorbs the net demand from other traders, so that
the expected profits conditioning on observing the aggregate order flow is zero. The trading
begins at time 0, and the risky security is liquidated at time 1. The ex post liquidation value of
the risky security (i.e., denoted by ) at time 1 is:
(1)
where is the liquidation value known to all agents at time 0, is the innovation of the payoff
known to informed traders, however, informed traders observe with a noisy signal, . The
quantity traded by informed traders is denoted by , and the quantity traded by liquidity trader is
denoted by . The random variables , , and are normally distributed with mean zero, and
assumed to be mutually independent.
Kyle (1985) shows that there exists a unique equilibrium if both profit maximization and
market efficiency conditions are held. In particular, the market efficiency condition requires the
clearing price set by the market maker to satisfy:
(2a)
(2b)
where is the net quantity (i.e., the net order flow) submitted by both informed traders and liquidity
traders at time 0. Since market maker earns zero expected profits conditioning on the bulk order flow, a
linear pricing rule is assumed to be applied by the market maker:
(3a)
(3b)
where is the classic inverse measure of market depth (i.e., the price impact of the net order flow on
price changes). Equation (3b) implies that the market maker cannot observe the specific quantities
traded by the informed traders and liquidity traders separately. As a result, price changes are always the
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outcome of order flow innovations in each round of the auction. In addition, the profit maximization
condition in Kyle (1985) gives rise to a linear equilibrium in a sequential auction environment as follows:
(4a)
(4b)
(5)
where is the change in prices between two consecutive trades (i.e., ,
denotes the aggregate price impact of the combined order flow from both informed and liquidity
traders. Hence, Equation (5) is the original Kyle’s (1985) price impact model.
To relax the assumption that the market maker only observes the aggregate order flow ,
we allow asymmetric price responses to informed order flow and noise order flow separately:
. (6)
where is the price impact generated from informed order flow (i.e., adverse selection
lambda), and is the price impact produced by noise order flow (i.e., noise lambda). Given
that only contains new information about the fundamental value of the risky security, we
should expect that the adverse selection component of illiquidity is purely driven by . In
contrast, liquidity traders trade the risky security for idiosyncratic reasons, hence, on average,
should have no effect on security prices.
2.2 The Empirical Estimation of Adverse Selection and Noise Lambdas
In this subsection, we introduce the empirical technique in estimating the adverse selection
lambda and the noise lambda . Since Kyle (1985), subsequent studies on price impact
models suggest that the bid-ask spread is comprised of the adverse selection and noninformation
components (see, for example, Glosten and Harris, 1988; Lin, Sanger and Booth, 1995; Huang
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and Stoll, 1997, and Madhavan et al., 1997).3 In order to achieve a sensible measure of adverse
selection component of illiquidity, we also account for the noninformation component of illiquidity in
the model. Specifically, we adopt the Brennan and Subrahmanyam (1996) model (i.e., which parallels to
the Glosten and Harris (1988) approach):
. (7)
Let denotes the sign of the incoming order flow at time ( for a buyer initiated trade and
for a seller initiated trade), the noninformation component of illiquidity is denoted by , the
aggregate adverse selection cost is denoted by , and is the public information signal observed
by the liquidity provider at time .
In order to decompose into the adverse selection lambda and the noise lambda ,
we use institutional order flow as the proxy for the informed order flow , and individual
(or retail) order flow as the proxy for the noise order flow . The choice of using
institutional investors as the proxy for informed traders and individual investors as the proxy for
liquidity/noise traders is justified by the evidence in existing literature on institutional/retail
trading. For instance, ample amount of evidence shows that stocks bought by retail investors
underperform stocks sold by retail investors (Odean, 1998; Barber and Odean, 2000, 2002;
Barber, Odean and Zhu, 2009, and Barber, Lee, Liu and Odean, 2009). This indicates that, on
average, retail investors trade stocks for idiosyncratic reasons, and their order flows do not
convey new information in stock prices. Moreover, Foucault et al. (2011) find that there is a
significant positive relation between retail trading and idiosyncratic volatility; hence, on average,
retail investors behave like noise traders. In contrast, there are also empirical evidence which
suggests that institutional investors usually are better informed and more sophisticated than
3 More specifically, the noninformation component further consists of order processing and inventory components. The consensus from prior literature is that permanent price changes can entirely be attributed to adverse selection, while the impact of inventory risk is temporary and reversed quickly (Glosten and Harris, 1988; and Madhavan et al., 1997). However, a recent study by Chung and Huh (2016) shows that the noninformation component of price impact also plays an important role in explaining the cross-sectional stock returns.
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individual investors (see, for example, Grinblatt and Keloharju, 2000; Barber, Lee, Liu, and
Odean, 2009; and Beohmer and Kelley, 2009).
To extract institutional and individual order flows from the aggregate order flows , we
utilize the approach similar to that of Fong, Gallagher and Lee (2014). Specifically, we classify
brokers into institutional and retail brokers using information from brokers’ websites and Factiva
search.4 Institutional order flows are trades executed through institutional brokers, and individual
order flows are trades executed through retail brokers. For those trades that cannot be identified
as either institutional trades or individual trades, we classify them as unclassified order flows.
The method of identifying institutional and individual order flows through broker ID
classification is supported by Linnainmaa and Saar (2012). They suggest that the broker ID is an
effective tool to infer the identity of different types of traders behind the order submission.5
Therefore, Equation (7) is modified to allow asymmetric price responses to institutional and individual
order flows:
, (8)
where is the price impact generated by institutional order flows (i.e., the adverse selection
lambda), is the price impact produced by individual order flows (i.e., the noise lambda), and
is the price impact of unclassified order flows which will then be discarded in asset pricing
analyses.6 Based on Equation (8), the ordinary least squares (OLS) is performed each month for
each stock to estimate all parameters, and is treated as an error term.
3. Data
4 Details on broker ID classifications are covered in Section 3. 5 There are concerns regarding the possibility that institutional investors may use multiple brokerage accounts to camouflage the information content of their order flows. However, both Linnainmaa and Saar (2012) and Fong et al. (2014) find that that magnitude of multiple brokerage account usage is small. Hence, different broker trades are representative of the underling clientele trading.6 The sum of , and equals to the aggregate order flow in Equation (7). In addition, it should be noted that the
unclassified order flow only accounts for 13% of the overall order flows.
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3.1 Data and Sample Collection
Our sample for institutional/individual lambda estimations includes ordinary shares listed on the
Australian Securities Exchange (ASX) over the period January 1996 to December 2012. We use
intraday transaction data from the Australian Equities Tick History Service (AETHS), supplied
by the Securities Industry Research Centre of Asia-Pacific (SIRCA). The AETHS database
provides details on every order submitted to the central limit order book including stock ticker
code, order type (i.e., submission, execution, revision, and cancellation), date and time, order
price, order volume (i.e., numbers of shares), order direction (i.e., buy or sell). We are able to
track the order from its initial submission to any revision, cancellation or execution, provided
that there is a unique identification number assigned to each new order. In addition, we classify
trades into buyer-initiated and seller-initiated trades based on the directions of the market orders,
thus, we do not rely on Lee and Ready’s (1991) algorithm to infer the trade direction. Finally, for
every trade, our data provide information on the buying and selling brokers associated with the
trades.7
In order to classify brokers into institutional and retail brokers, we first match the broker
IDs in AETHS with the broker name list on the IRESS system. We filter out trades initiated by
institutional brokers, and then sort the remaining trades into those initiated by retail brokers. To
classify brokers, we follow a manual procedure similar to that used in Fong et al. (2014). That is,
we first check the broker’s website, their mission statement, the company overview, and
especially the “about us” section to identity their primary customer group. If the broker does not
have a website, we use Factiva to research for news items related to the broker, and we then
classify them accordingly. For those brokers that do not have sufficient information on their
website or Factiva search, we classify them as unclassified brokers. Finally, to avoid extreme
illiquidity stocks, we only include stocks with at least 330 trades per month or 15 trades per day
on average.8
7 SIRCA issued a notification on February 3, 2016 that restricts the use of broker IDs on orders and orders placed on the Centre Point order matching system (dark pool) after October 2010. These restrictions do not apply to our paper as we do not require access to broker IDs on order data. We only use broker IDs on trade data, which are still available in SIRCA or other data provider, such as IRESS. 8 We also used other liquidity filters, for example, 110 trades and 220 trades per month to estimate institutional and individual lambdas. The alterative lambdas yield similar results in asset pricing analyses, and therefore are not included in the paper.
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The monthly stock returns, market capitalization, number of share outstanding are
obtained from the Share Price and Price Relative (SPPR) database. The daily stock returns and
share turnover variables are sourced from the SPPR daily. The accounting variable data such as
book value of total shareholder equity is obtained from Morningstar (formally known as Aspect
Huntley). The SPPR group ticker code is used to merge the intraday transaction data from
AETHS with stock return data from SPPR as well as accounting data from Morningstar. Finally,
we collect unscheduled corporate announcements data from the Australian Corporate
Announcement (ACA) database, available on SIRCA, for our analyses on the relation between
pre-announcement lambdas and unscheduled announcement returns.
3.2 Sample Characteristics
Panel A of Table 1 presents the summary statistics for the estimates of institutional and
individual lambdas. Institutional and individual lambdas are estimated by applying Equation (8),
and estimates are winsorized at the 1st and 99th percentiles. The first noticeable feature is that the
sample mean of institutional lambda is greater than that of individual lambda by approximately
17%. The mean-difference-test on null hypothesis that the mean of institutional lambda equals to
the mean of individual lambda is rejected at the 1% level. The magnitude of institutional lambda
exceeds that of individual lambda at 25th percentile, median, and 75th percentile. This indicates
that the institutional lambda’s greater magnitude is not driven by any particular lambda
subsamples. Moreover, the standard deviation of institutional lambda is also greater than the
standard deviation of individual lambda, suggesting that institutional lambda is more volatility
on average. Panel A also reports the average t-statistics for institutional and individual lambda
estimates and percentage of estimates that exceed t-value of 1.96. The averages of t-statistics
suggest that the estimates of both institutional and individual lambdas are highly significant.
Furthermore, institutional lambda has 78% of estimates that are significant at the 5% level. In
contrast, only 69% of individual lambda estimates that are significant at the conventional level.
Panel B of Table 1 provides the average of institutional and individual lambdas in up and
down markets separately. Motivated by the evidence in Brennan et al. (2013) that the illiquidity
in down markets is priced more significantly than the illiquidity in up markets, we present the
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summary statistics separately for months in which the current month’s value-weighted market
return is positive (negative) as the up (down) market.9 It is evident that the difference in lambda
magnitude between up and down market is greater for institutional lambda than that for
individual lambda.10 This suggests that institutional investors prefer to avoid being trapped in an
illiquid stock in a falling market, and thus are willing to pay a major price concession in the
down market (i.e., they are facing a higher price impact for their trades). In contrast, there is only
small difference between individual lambda in up and down markets. The drastic increase of
institutional lambda in down markets can be explained by the relation between funding liquidity
and liquidity risk. Brunnermeier and Pedersen (2009) theoretically show that the impairment of
financial intermediaries’ capital holdings during the down market has a spillover effect on
institutions’ funding liquidity and will further result downward liquidity spirals.
Panel C of Table 1 reports the mean of institutional and individual lambdas for five size
groupings sorted on firms’ market capitalization. First, the mean of institutional lambda always
exceeds the mean of individual lambda within each size quintile portfolio. The mean-difference-
test on the null hypothesis that institutional lambda equals to individual lambda is rejected at the
1% level for all size quintiles. Second, both institutional and individual lambdas decrease
monotonically with firm size. Further, the difference between institutional and individual
lambdas is higher for bigger firms, indicating that institutional price impact is higher than that of
individuals’ in large size firms. This is because large size stocks are generally more liquid, only
institutional trades can have an impact on the bid-ask spread. This result is similar to that
documented in Linnainmaa and Saar (2012), they find that only trades from institutional
investors have a price impact on the bid-ask spreads for large stocks, whereas the price impact
induced by retail brokers’ order flows is negligible.
[Insert Table 1]
9 In terms of the aggregate market illiquidity level, Chordia, Roll, and Subrahmanyam (2001) find that illiquidity is greater in down markets.10 The sharp contrast between institutional and individual lambda in up and down markets can be partially explained by the liquidity co-movement documented in Chordia, Roll, and Subrahmanyam (2000). Recent studies suggest that the market liquidity co-movement is partially driven by institutional investors’ demand for liquidity in down markets (Mitchell and Pulvino, 2012). The fact that the difference for individual lambda between up and down markets is trivial indicates that the demand-side liquidity co-movement is mainly driven by institutions’ demand for liquidity in crisis periods.
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4. Returns on Portfolio Sorts
Similar to Chordia, Huh and Subrahmanyam (2009), we first sort stocks into five size quintiles,
and subsequently each size quintile is sorted into five lambda quintiles. This sorting procedure
results in the total of 25 portfolios. We then compute value-weighted portfolio returns based on
the market capitalization from the end of previous month. The size and lambda groups are
denoted as SIZEi and Illqi (where ). For consistency, stocks used for the portfolio
analyses are limited to those used for our main regression analyses in the subsequent section. In
addition, we also compute the intercepts from the time-series regression of 25 value-weighted
portfolio returns (in excess of 13-week Treasury notes rate) regressed on the Fama-French-
Carhart four (FFC) factors.11
[Insert Table 2]
Table 2 reports the average of value-weighted monthly quintile portfolio returns for both
institutional and individual lambdas. It can be seen that there is a strong positive return-
institutional lambda relation across all five size quintiles. The average monthly returns in the
month following portfolio formation increase monotonically from the lowest institutional lambda
portfolio (i.e., the most liquid portfolio) to the highest institutional lambda portfolio (i.e., the
most illiquid portfolio). The return spreads between highest (Illiq 5) and lowest (Illiq 1)
institutional lambda are all statistically significant at the 5% level. The economic significance of
institutional lambda can be interpreted based on the return spread of the biggest size quintile,
which is 39 bps per month (i.e., 4.68% per annum).12 Panel B reports the average of value-
weighted monthly returns for individual lambda. The return spreads of individual lambda hedge
portfolios are only significant for the first three size quintiles. Moreover, the return spread of
individual lambda hedge portfolio in size quintile five is small in magnitude, suggesting that the
effect of individual lambda on stock returns is predominately concentrated in small stocks.
11 We also compute the equal-weighted mean returns for 25 portfolios formed by sorting stocks into lambdas and firm size which leads to similar results. Above-mentioned portfolio sorting results are available upon request.12 The average market capitalization for size quintile five is approximately $10 billion. In contrast, the average market capitalization for size quintile one is around $56 million. The characteristics of size quintile five represent the most investable stocks in the ASX; hence, our interpretation of economic significance will focus solely on size quintile five.
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5. Asset Pricing Regressions
In this section, we examine the role of institutional and individual lambda and their relative
importance in asset pricing. The first subsection introduces the empirical methodology for asset
pricing tests. The second subsection reports the main results, and third subsection presents
subsample analyses as robustness check.
5.1 Empirical Asset Pricing Methodology
Our asset pricing methodology closely follows Brennan, Chordia, and Subrahmanyam (1998)
and Chordia, Huh and Subrahmanyam (2009). Specifically, to alleviate the error-in-variable
problem, the individual stock returns are adjusted for Fama-French-Carhart (FFC) factors — i.e.
market ( ), size ( ), book-to-market ( ), and momentum ( ) factors (Fama
and French, 1993; Carhart, 1997) based on two methods.13 The risk-adjusted return, and
are then used as dependent variables for the Fama-MacBeth (1973) cross-sectional regression.
The t-statistics of average slope coefficients are computed with Newey-West (1987) standard errors.
The regression specification follows Brennan et al. (1998):
1
(9)
where or 2, is the lagged lambda variable for stock (i.e., or which is
estimated from Equation (8)), and are lagged control variables for stock . The choice of
control variables is based on well-known cross-sectional stock return determinants. Follows the
spirit of Fama and French (1993), Jegadeesh and Titman (1993), Amihud (2002), Ang, Hodrick,
Xing and Zhang (2006), and Cheng, Hameed, Subrahmanyam, and Titman (2016), the control
variables are defined as follows:
13 In the first method, we apply the static sample fitting adjustment for monthly stock return . For the second method, we
utilize a dynamic sample fitting as the adjustment for individual stock return . In particular, the time-series rolling factor
loadings, are estimated for all stocks each month over the entire sample period using past 36 months return observations (with at least 24 months of past returns).
14
1) SIZE: measured as the natural logarithm of the market capitalization.
2) BM: measured as the natural logarithm of the book value of the firm’s equity to its
market value of equity.
3) SH_TURN: measured as the natural logarithm of the company’s share turnover rate
which is computed as the trading volume divided by the total number of shares
outstanding.
4) REV: measured as the one-month short-term return reversal.14
5) RET2-3: measured as buy- and-hold return on stock from month to .
6) RET4-6: measured as buy- and-hold return on stock from month to .
7) RET7-12: measured as buy- and-hold return on stock from month to .
8) IVOL: idiosyncratic volatility is measured as the volatility of the idiosyncratic return (
). The idiosyncratic return (i.e. the residual term) is computed by regressing daily stock
return on a value-weighted market index and daily Fama-French factors over a maximum
of 250 days ending on December 31 of year t.
9) AMIHUD: measured as the average daily ratio of the absolute stock return to the dollar
trading volume within the month t.
The book-to-market ratio are constructed from SPPR monthly and Morningstar accounting files.
Amihud (2002) illiquidity measure, idiosyncratic volatility (i.e., IVOL), and share turnover (i.e.,
SH_TURN) are constructed using both SPPR daily and monthly data. Other firm characteristic
variables (i.e., SIZE, RET2-3 to RET7-12) are compiled from SPPR monthly file.
5.2 Empirical Results
In this section, we examine whether institutional and individual lambdas have any explanatory
power on stock returns at the individual stock level. Based on Equation (9), the Fama-MacBeth
(1973) cross-sectional regression is performed each month. Table 3 reports the time-series
14 A recent study by Cheng et al. (2016) shows that the institutional selling pressure in response to past stock price declines is not immediately accommodated by market makers, which, in turn leads to the short-term return reversal. To ensure the premium of institutional order illiquidity is not driven by the effect short-term reversal, we include it in all our regressions.
15
averages of the coefficients of institutional/individual lambda and a group of control variables.
To correct for autocorrelation, t-statistics are computed based on Newey-West (1987) standard
errors. Panels A and B of Table 3 report the regression results for institutional and individual
lambdas on both raw and adjusted individual stock returns. First, based on the result from the
regression of raw excess stock returns (i.e., EXSRET0), the average coefficient of institutional
lambda is positive and statistically significant at the 1% level after controlling for effects of other
return determinants. Similarly, for EXSRET0 model specification, individual lambda also has
significant explanatory power on stock returns even after controlling for other firm
characteristics. However, it is evident that the magnitudes of both coefficient and t-value of
institutional lambda are substantially higher than those of individual lambda.
In addition, moving from raw returns to risk-adjusted returns in second and third columns
of Table 3 (i.e., EXSRET1 and EXSRET2), the explanatory power of both institutional and
individual lambdas attenuates substantially. This pattern suggests that the pricing of institutional
and individual lambdas is subject to systematic risks. In particular, individual lambda loses its
significance in EXSRET2 regression specification, indicating that the effect of individual lambda
on returns can be fully captured by FFC risk factors.
The signs of the coefficients on control variables in the Fama-Macbeth regressions are
consistent with prior literature. The negative coefficient on the firm size and positive coefficient
on book-to-market ratio are consistent with the size and value effects documented in Fama and
French (1992, 1993). The average coefficients of momentum variables are also positive and
significant. This is consistent with the price momentum documented in Jegadeesh and Titman
(1993). The negative coefficient on one-month short-term reversal is consistent with the reversal
effect documented in Jegadeesh (1990). It is worth noting that the other two alternative liquidity
proxies – share turnover and Amihud (2002) measure are less significant compared to lambda
variables. This suggests that the low-frequency-based illiquidity proxies do not provide much
adverse selection related information to the asset pricing model after the high-frequency-based
illiquidity is controlled for, which is consistent with the findings in Huh (2014).
Given that the significance of individual lambda is biased towards small stocks, a related
concern is whether the market microstructure biases could affect our results. Asparouhova,
16
Bessembinder and Kalcheva (2010) show that the estimated illiquidity premium produced by the
standard cross-sectional regression suffers upward bias in t-statistics in the presence of bid-ask
bounce. More importantly, the bid-ask bounce bias is more pervasive in small stocks, hence, we
address this issue by performing the weighted least-squares (WLS) cross-sectional regression.
The prior-month gross return (i.e. one plus the return in month ) is used as the weighting
choice for WLS. Panels C and D of Table 3 show that the magnitude of both the coefficients and
t-values of institutional and individual lambdas has decreased after adjusting the market
microstructure bias. However, overall results are similar to those reported in Panels A and B.
Specifically, institutional lambda maintains its significance in all three model specifications,
whereas individual lambda is not priced in stock returns when EXSRET2 is used as the dependent
variable.
[Insert Table 3]
To gain insight into which component of lambda (i.e., institutional or individual) is the
key driver behind the pricing of the adverse selection cost of illiquidity in stock returns, we
perform a horserace between institutional and individual lambda in Table 4. Panel A of Table 4
shows individual lambda is never priced in stocks returns in the presence of institutional lambda,
meanwhile institutional lambda is highly significant across all regression specifications. In
comparison to the regression results in Table 3, the coefficient of individual lambda reduces
substantially with the inclusion of institutional lambda, whereas the coefficient magnitude (as
well as t-value) of institutional lambda is qualitatively similar. This is a strong evidence
supporting our hypothesis that the adverse selection premium embedded in illiquidity cost is
predominantly driven by the information component (i.e., proxied by institutional order flows)
of Kyle’s lambda. On the other hand, the noise component (i.e., proxied by individual order
flows) of Kyle’s lambda plays no role in explaining stock returns. Given that the WLS
specification is a more stringent hurdle for claiming the pricing of illiquidity, we repeat the
analyses with WLS in Table 4 Panel B. Similar to Panel A, when both institutional and
individual lambdas are included in the regression, only institutional lambda is significantly
17
priced, suggesting that the adverse selection premium is mainly driven by institutional order
flows.
[Insert Table 4]
5.3 Robustness Tests
In summary, the main results in section 5.2 present two important findings. First, the institutional
lambda has the most significant effect on the cross-sectional stock returns. This is evident in the
anomalous return patterns of portfolios sorted on institutional lambda as well as the significant
pricing of lambda in risk-adjusted Fama-MacBeth (1973) regressions. In contrast, the effect of
individual lambda is mainly concentrated in small stocks and can be explained by the FFC risk
factors. Second, the positive relation between stock returns and the adverse selection component
of illiquidity is mainly driven by the institutional trading induced price impact. In this section,
we show our results are robust to different subsample periods, alternative price impact
estimations of institutional and individual lambdas, and different trade-size classifications of
order flows. For brevity, the results of above-mentioned robustness tests are available upon
request.
6. Underlying Channels of the Institutional Lambda Effect
In this section, we investigate the potential explanations behind the asymmetric pricing between
institutional and individual lambdas in stock returns. In order to dissect the underlying sources
behind the institutional/individual effect, we use two unique events to investigate the underlying
channels behind the prominence of institutional lambda over individual lambda in Section 6.1.15
15 In an unreported Fama-MacBeth (1973) cross-sectional regression analysis, we show that sell lambda is always priced more significantly than that of buy lambda. This asymmetric pricing relation holds both at institutional and individual levels. In addition, the institutional sell lambda has the greatest effect on returns among four lambda variables examined in the horserace. In order to estimate buy and sell lambdas for institutional and individual order flows, we modify Equation (8) in the spirit of Brennan et al. (2012) to estimate the institutional/individual buy- and sell-order illiquidity. Specifically, and are split
into corresponding buy and sell order flows by conditioning on trade directions, i.e., is institutional buy order
flow, is institutional sell order flow, is individual buy order flow, and is individual sell order flow.
18
6.1 Information and Liquidity Channels of the Institutional Lambda Effect
Following both the theoretical and empirical literature on institutional trading, we hypothesize
that the significance of institutional lambda is potentially caused by both information and
liquidity channels of institutional trading induced price impact (Holthausen et al., 1990;
Lakonishok et al., 1992; Chan and Lakonishok, 1993; Saar, 2001 and Sias et al., 2006). The
influential work by Chan and Lakonishok (1993) argues that the large institutional trades can
cause permanent price changes if the trades themselves reveal private information that is not yet
incorporated into stock price. The information effect of institutional trading will lead to a
positive and significant adverse selection cost. On the other hand, the short-term illiquidity
premium is often caused by the difficulty of institutional investors in locating the willing
counterparties whom they can transact with immediately. The efforts by institutional investors to
attract counterparties is then translated in the form of major price concessions on their trades
(Kaniel et al., 2008, and Campbell et al., 2009). To gain insight into these two potential channels,
we use two unique events to investigate the information and liquidity hypotheses of institutional
lambda effect, namely, the unscheduled corporate announcement and the announcement of
quarterly S&P/ASX 200 index deletion.
6.1.1 The Information Channel
To test the information channel, we investigate the relation between the pre-announcement
period abnormal individual/institutional lambda and the forthcoming three-day cumulative
abnormal returns. If the significance of institutional lambda is driven by the private information
content of their trades, we expect the pre-announcement institutional lambda to have predictive
power on the forthcoming announcement returns. We collect all corporate announcements data
over the period of January 1, 1996 to December 31, 2012 from the Australian Corporate
Announcement (ACA) database via SIRCA.16 We only focus on the unscheduled
announcements, such as the open-market share buy-back, director appointment/resignation, and
the intention to make takeover bid. Given that the unscheduled announcement does not have a
16 We require 60 trading days prior to the announcement to compute the benchmark level lambda, therefore, the starting point of the sample is April 1996.
19
predetermined date, the rumor induced trading is less likely, and thus provides us a cleaner
setting to examine the information content of institutional lambda.
Following Khan and Lu (2013) and Hao (2015), we first compute the benchmark average
lambda over the window [-60, -11]. We then subtract the benchmark lambda level from the daily
lambda during the pre-announcement window [-10, -2]. We denote the difference as the
abnormal level lambda . The model specification is given by:
1
(10)
where is one of the four lambda variables for stock (i.e.,
and ) in day . To test whether the pre-announcement
abnormal lambdas have any predictive power on the forthcoming announcement returns, we run the
following panel regression:
1
(11)
where the dependent variable is the cumulative abnormal return around the three-day
announcement window, for stock . The value-weighted market return is used as
the benchmark to calculate . To ensure that the result is not driven by other illiquidity
proxies, we compute the average share turnover in natural logarithm and average daily Amihud
ratio over the window [-60, -2] prior to the announcements. To control for the potential price
run-up leading up to the announcements, we compute the buy-and-hold market adjusted returns
over the window [-60, -2], as well as the standard deviation of daily stock return over the
window [-60, -2] prior to the announcements. We also control for firm characteristics, such as
size, book-to-market ratio, stock price, together with industry fixed effect and year fixed effect
.
20
Table 5 reports the results of panel regression of the three-day announcement return on
the pre-announcement abnormal lambda . Following Thomson (2011), all model
specifications apply two-way cluster-robust standard errors that are clustered by firm and event.
It can be seen that institutional buy lambda (institutional sell lambda) has a positive (negative)
relationship with the unscheduled announcements’ returns, and both variables are significant at
the 1% level. In contrast, none of the abnormal individual lambdas have predictive power on
, suggesting that individual pre-announcement trades do not contain any private
information. Our result is consistent with the finding in prior literature that institutional investors
are the more informed (see, for example, Grinblatt and Keloharju, 2000; Barber, Lee, Liu, and
Odean, 2009; and Beohmer and Kelley, 2009). The difference in predictive power between
institutional and individual lambdas on the forthcoming announcement returns provides evidence
to support the information hypothesis. The information channel of institutional price impact
implies that the prominence of institutional lambda is a form of adverse selection premium
required by uninformed traders to compensate for losses on trading with informed traders. As a
result, this will lead to a positive and significant institutional lambda effect on stock returns.
[Insert Table 5]
6.1.2 The Liquidity Channel
The information channel of institutional lambda does not rule out the possibility of the liquidity
channel. To directly examine the liquidity effect of institutional lambda is challenging, given that
the detailed institutional portfolio holding data are generally unavailable. As a result, we utilize a
unique event where the institutional investors with indexing approach are forced to rebalance
their portfolios without fundamental reasons. The announcement of quarterly S&P/ASX 200
index deletion provides us a unique setting to gauge the liquidity-motived institutional lambda
effect, given that the rebalance of index itself is information-free. This unique characteristic of
index deletion allows us to disentangle the liquidity effect from the information effect.
21
We manually collect all the announcement dates of the S&P/ASX 200 index quarterly
rebalancing from the announcement files which can be retrieved from the ASX’s official
website. The index deletion is announced to the public on the 10th business day (after the market
closed) prior to the effective rebalance date.17 Hence, we define our event date (i.e., effective
announcement date) as the next trading day after the S&P announcement date. We further
remove firms which were deleted from the index for reasons other than the breach of market
capitalization (e.g., spin-off, M&A and other corporate events). In each quarter over the period
September 2000 to December 2012, we compute the averages of individual and institutional
lambdas on the deleted S&P/ASX 200 stocks over the window [-10, +10] surrounding the event
date.18
Figure 1 plots the average and 95% confidence intervals for institutional buy/sell lambda
and individual buy/sell lambda surrounding the announcement of index deletion. Panel A of
Figure 1 shows that there is a sharp decrease in institutional buy lambda upon the announcement
of the deletion. Institutional buy lambda bounces back to the pre-announcement level two days
after the announcement. However, this rebound of institutional buy lambda is short-lived, this is
evident in the V-shape pattern in the post-announcement window. Panel B of Figure 1 shows that
there is a sharp increase in institutional sell lambda upon the deletion announcement. The
increase in institutional sell lambda on the announcement corresponds to the decrease in
institutional buy lambda in Panel A. The sharp surge in institutional sell lambda indicates that
there is an increased institutional demand to sell the removed stocks for minimizing their
tracking errors. However, institutional sell lambda quickly rebounds to the pre-announcement
level approximately six days after the announcement.
In contrast, Panels C and D reveal that there is no particular pattern in individual buy and
sell lambdas surrounding the announcement. For instance, there is only a small decrease in
individual lambda upon the announcement of deletion. Moreover, the movement of individual
sell lambda appears to be random surrounding the announcement. Given that the 95% confidence
17 Although the announcement of index rebalance is usually scheduled on the 10 th business day prior to the effective date of rebalancing, however, the actual announcement day may vary. Hence, we manually collect all actual announcement dates of ASX 200 quarterly rebalancing from the announcement files which can be retrieved from the ASX official website by typing in the announcement code “ZSP”: http://www.asx.com.au/asx/statistics/announcements.do?by=companyName&companyName.18 The S&P/ASX 200 Index was launched on 31 March 2000, however, the earliest available announcement file is only available from 15th September 2000. Therefore, we restrict our sample over the period of September 2000 to December 2012.
22
intervals of individual lambdas are substantially wider compare to that of institutional lambdas,
indicating that the averages of individual lambda are quite uninformative (i.e., higher standard
errors) around the announcement. Therefore, the overall result of the index deletion rebalance
does provide an indirect support for the liquidity channel of institutional lambda effect.
[Insert Figure 1]
7. Conclusion
One important strand of the asset pricing literature links the adverse selection cost of illiquidity
to asset prices (see, for example, Brennan and Subrahmanyam, 1996; and Chordia et al., 2009).
However, previous research on the return-illiquidity relation based on the adverse selection cost
assumes a symmetric relation between order flow and price changes. In this study, we propose a
novel method to estimate the adverse selection component of illiquidity, and link the new
measures to asset pricing. By using a comprehensive broker identity stamped intraday trading
data, this study is the first to show that the adverse selection cost of illiquidity is predominantly
driven by the institutional trading induced price impact (i.e., institutional lambda). In contrast,
the price impact generated by individual/retail trading (i.e., individual lambda) plays no role in
explaining stock returns. We further examine the information and liquidity channels for
institutional lambda effect. We find that the pre-announcement institutional buy (sell) lambda is
positively (negatively) related to the announcement-period abnormal returns for unscheduled
announcements. We also observe a sharp decrease (increase) in the institutional buy (sell)
lambda upon the announcement of index deletions. These findings imply that the underlying
mechanisms of the significant institutional lambda effect on returns is in fact driven by both
information and liquidity effects.
23
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Table 1
Summary statisticsThe sample consists of common stocks listed on the ASX over the period of January 1, 1996, to December 31, 2012. Panel A presents the descriptive statistics of institutional and individual lambdas represent institutional order illiquidity and individual order illiquidity, respectively. The institutional and individual lambdas (i.e., Inst_lam and Ind_lam) are estimated for each stock in each month by regressing price changes on signed institutional and individual order flows, separately. The aggregate order flow is classified into institutional and individual components based on the broker IDs associated with each trade. The institutional and individual lambdas are then divided by stock prices from previous month and scaled up by 10 4. The table reports the number of observations, mean, 25th percentile, median, 75th percentile, standard deviation, and the percentage of institutional and individual lambdas with t-statistics exceed 1.96 and associated average t-statistics. The mean difference tests are conducted on the null hypothesis that the mean of institutional lambda equals to the mean of individual lambda. Panel B presents the mean and standard deviation of lambda estimations when market monthly excess value-weighted return is positive and negative. Panel C presents the mean of institutional and individual lambdas sorted by the market capitalization. The mean difference tests are conducted on the null hypothesis that the mean of institutional lambda equals to the mean of individual lambda, and the associated p-value is reported for each size quintile.
Panel A: Institutional and Individual lambdas
Obs. Mean 25th Median 75th Std.Dev. %(t >1.96) t-stats
Inst_lam 69606 0.00794 0.00053 0.00251 0.00885 0.01415 78% 4.72
Ind_lam 69606 0.00677 0.00023 0.00149 0.00686 0.01343 69% 4.15
H0: Inst_lam = Ind_lam p-value < 0.0001
Panel B: Sorted by market return at time t
Mkt(t) > 0 Mkt(t) < 0
Mean Std.Dev. Mean Std.Dev.
Inst_lam 0.00788 0.01397 0.00802 0.01427
Ind_lam 0.00678 0.01320 0.00676 0.01357
H0: Inst_lam = Ind_lam p-value < 0.0001 p-value < 0.0001
Panel C: Sorted by firm size
Small Size 2 Size 3 Size 4 Big
Inst_lam 0.01811 0.00899 0.00635 0.00479 0.00236
Ind_lam 0.01685 0.00734 0.00426 0.00270 0.00113
p-value <0.0001 <0.0001 <0.0001 <0.0001 <0.0001
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Table 2
Average returns to lambda portfoliosThis table reports the average of value-weighted monthly returns for the 25 portfolios formed on firm size and institutional/individual lambda. The institutional and individual lambdas (i.e., Inst_lam and Ind_lam) are estimated for each stock each month by regressing price changes on signed institutional and individual order flows, separately. The aggregate order flow is classified into institutional and individual components based on the broker IDs associated each trade. The stocks are first sorted into five size quintiles, subsequently five lambda quintiles are further sorted within each size quintile. Panel A reports the time-series average returns for five institutional lambda differential portfolios. Panel B reports the time-series average returns for five individual lambda differential portfolios. Specifically, the return spreads are differences between highest illiquidity portfolio (Illiq 5) and lowest illiquidity portfolio (Illiq 1). The t-statistics are computed with Newey-West (1987) standard errors that are reported in parentheses. The sample covers the period from period January 1996, to December 2012.
Panel A: Institutional Lambda Average Returns Panel B: Individual Lambda Average Returns
Inst_lam Illiq 1 Illiq 2 Illiq 3 Illiq 4 Illiq 5 H-L Ind_lam Illiq 1 Illiq 2 Illiq 3 Illiq 4 Illiq 5 H-LSIZE 1 (S) 0.74 1.11 1.27 1.56 3.18 2.43 SIZE 1 (S) 0.85 1.32 1.98 2.57 3.48 2.65
(1.37) (2.40) (2.57) (3.45) (4.60) (5.07) (1.90) (2.29) (3.99) (3.50) (5.13) (5.43)
SIZE 2 0.83 0.97 1.16 1.50 2.45 1.62 SIZE 2 0.71 1.09 1.36 1.51 2.38 1.68
(1.14) (1.26) (1.59) (1.63) (3.09) (3.16) (0.50) (1.33) (1.97) (2.00) (3.05) (3.00)
SIZE 3 0.12 0.42 0.57 0.69 1.43 1.31 SIZE 3 0.19 0.25 0.63 0.52 0.98 0.78
(0.19) (0.67) (1.07) (1.09) (2.52) (2.41) (0.16) (0.43) (1.23) (0.98) (2.46) (2.35)
SIZE 4 0.26 0.46 0.55 0.65 0.88 0.61 SIZE 4 0.46 0.44 0.61 0.77 0.90 0.43
(0.54) (1.03) (1.25) (1.29) (2.36) (2.28) (0.98) (1.02) (1.26) (1.50) (2.18) (0.86)
SIZE 5 (B) 0.40 0.54 0.51 0.61 0.79 0.39 SIZE 5 (B) 0.24 0.22 0.45 0.34 0.48 0.21
(1.23) (1.57) (1.50) (1.68) (2.11) (2.05) (0.48) (0.43) (0.94) (0.81) (1.27) (0.82)
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Table 3
Stock-level cross-sectional regressionsThis table reports the time-series average of individual stock coefficients from the Fama-MacBeth (1973) cross-sectional regression. In each month from 1996 to 2012, a regression is estimated with stock's return in excess of the 13-week Treasury notes rate (i.e. EXSRET0) and the Fama-French-Carhart risk-adjusted returns (i.e. EXSRET1 and EXSRET2) as dependent variables. SIZE denotes the natural logarithm of the market capitalization. BM denotes the natural logarithm of the book-to-market ratio. SH_TURN represents the natural logarithm of the share turnover. REV is the one-month short-term reversal, which is defined as the stock return over the prior month. RET2-3, RET4-6, and RET7-12 are the buy-and-hold returns on stock over the t - 2 to t - 3, t - 4 to t - 6, and t - 7 to t – 12 months prior to current month t. IVOL is the idiosyncratic volatility. Amihud is the average daily ratio of the absolute stock return to the dollar trading volume within the month. The institutional and individual lambdas (i.e., Inst_lam and Ind_lam) are estimated for each stock in each month by regressing price changes on signed institutional and individual order flows, separately. The aggregate order flow is classified into institutional and individual components based on the broker IDs associated with each trade. Panel A reports the regression results for institutional lambda. Panel B reports regression results for individual lambda. Panel C reports the results of weighted least-square (WLS) cross-sectional regressions for institutional lambda. Panel D reports the results of WLS cross-sectional regressions for individual lambda. Following Asparouhova, Bessembinder and Kalcheva (2010), the prior-month gross return (one plus the return in month t - 1) is employed as weighting variable for the WLS regression. All lambdas are divided by the stock price from previous month and then scaled up by 104. The t-statistics are computed by using Newey-West (1987) standard errors, with * represents statistical significance at the 10% level, ** represents statistical significance at the 5% level, *** represents statistical significance at the 1% level.
Panel A: Institutional Lambda Panel B: Individual Lambda
Expla. Var EXSRET0 EXSRET1 EXSRET2 Expla. Var EXSRET0 EXSRET1 EXSRET2
Intercept 0.075*** 0.074** 0.032 Intercept 0.102*** 0.101*** 0.053*
(3.41) (2.26) (1.20) (4.02) (2.81) (1.81)
Inst_lam 10.020*** 9.699*** 8.959*** Ind_lam 3.697** 3.574** 2.897
(9.17) (8.38) (6.91) (2.21) (2.06) (1.58)
SIZE -0.005*** -0.005*** -0.004*** SIZE -0.006*** -0.006*** -0.004***
(-5.56) (-3.94) (-2.96) (-5.68) (-4.90) (-3.57)
BM 0.016*** 0.014*** 0.012*** BM 0.016*** 0.014*** 0.011***
(5.50) (4.68) (4.06) (5.59) (4.83) (4.07)
SH_TURN -0.006*** -0.006*** -0.005*** SH_TURN -0.006*** -0.006*** -0.005***
(-3.92) (-3.68) (-3.15) (-4.16) (-3.81) (-3.66)
REV -0.020** -0.019** -0.018** REV -0.022** -0.020** 0.018**
(-2.29) (-2.19) (-2.03) (-2.44) (-2.39) (-2.09)
RET2_3 0.034*** 0.033*** 0.032*** RET2_3 0.038*** 0.035*** 0.027***
(5.50) (5.45) (5.20) (5.73) (5.19) (4.84)
RET4_6 0.008 0.004 0.003 RET4_6 0.007 0.006 0.004
(1.37) (0.77) (0.56) (1.22) (1.02) (0.84)
30
RET7_12 0.011*** 0.011*** 0.008** RET7_12 0.009*** 0.009** 0.007**
(3.24) (2.81) (2.53) (2.74) (2.34) (2.31)
IVOL -0.043*** -0.037** -0.029** IVOL -0.048*** -0.041*** -0.033**
(-2.65) (-2.15) (-2.01) (-2.71) (-2.65) (-2.09)
Amihud 0.018*** 0.016*** 0.012** Amihud 0.024*** 0.021*** 0.016***
(3.12) (2.68) (2.27) (4.23) (3.67) (3.47)
R2 0.170 0.141 0.120 R2 0.166 0.135 0.113
Panel C: Institutional Lambda WLS Panel D: Individual Lambda WLS
Expla. Var EXSRET0 EXSRET1 EXSRET2 Expla. Var EXSRET0 EXSRET1 EXSRET2
Intercept 0.088*** 0.072*** 0.040 Intercept 0.118*** 0.099*** 0.064**
(3.58) (3.07) (1.43) (3.91) (3.15) (2.07)
Inst_lam 9.441*** 9.196*** 8.526*** Ind_lam 3.420** 3.336** 2.528
(7.91) (7.28) (6.66) (2.07) (1.97) (1.46)
SIZE -0.005*** -0.005*** -0.003** SIZE -0.007*** -0.006*** -0.004***
(-3.81) (-3.66) (-2.58) (-4.61) (-4.28) (-3.18)
BM 0.014*** 0.013*** 0.012*** BM 0.016*** 0.014*** 0.011***
(4.74) (4.56) (3.88) (5.46) (4.76) (3.82)
SH_TURN -0.006*** -0.006*** -0.005*** SH_TURN -0.006*** -0.006*** -0.005***
(-3.88) (-3.61) (-3.13) (-3.99) (-3.63) (-3.60)
REV -0.022** -0.020** -0.018** REV -0.022** -0.021** -0.019**
(-2.31) (-2.18) (-2.06) (-2.23) (-2.21) (-2.08)
RET2_3 0.035*** 0.034*** 0.032*** RET2_3 0.036*** 0.032*** 0.029***
(5.69) (5.61) (5.29) (5.59) (5.20) (4.96)
RET4_6 0.009 0.006 0.004 RET4_6 0.008 0.007 0.005
(1.58) (1.01) (0.87) (1.39) (1.18) (1.06)
RET7_12 0.012*** 0.009*** 0.008*** RET7_12 0.010*** 0.010*** 0.007**
(3.35) (2.82) (2.76) (3.11) (2.70) (2.47)
IVOL -0.043** -0.043** -0.033* IVOL -0.048** -0.047** -0.030**
(-2.21) (-2.13) (-1.76) (-2.41) (-2.33) (-2.05)
Amihud 0.017*** 0.014** 0.011* Amihud 0.023*** 0.020*** 0.018***
(3.23) (2.38) (1.94) (3.61) (3.26) (3.19)
R2 0.163 0.136 0.117 R2 0.157 0.131 0.110
31
Table 4
Stock-level cross-sectional regressions: Institutional lambda versus individual lambdaThis table reports the time-series average of individual stock coefficients from the Fama-MacBeth (1973) cross-sectional regression. In each month from 1996 to 2012, a regression is estimated with stock's return in excess of the 13-week Treasury notes rate (i.e. EXSRET0) and the Fama-French-Carhart risk-adjusted returns (i.e. EXSRET1 and EXSRET2) as dependent variables. SIZE denotes the natural logarithm of the market capitalization. BM denotes the natural logarithm of the book-to-market ratio. SH_TURN represents the natural logarithm of the share turnover. REV is the one-month short-term reversal, which is defined as the stock return over the prior month. RET2-3, RET4-6, and RET7-12 are the buy-and-hold returns on stock over the t - 2 to t - 3, t - 4 to t - 6, and t - 7 to t – 12 months prior to current month t. IVOL is the idiosyncratic volatility. Amihud is the average daily ratio of the absolute stock return to the dollar trading volume within the month. The institutional and individual lambdas (i.e., Inst_lam and Ind_lam) are estimated for each stock in each month by regressing price changes on signed institutional and individual order flows, separately. The aggregate order flow is classified into institutional and individual components based on the broker IDs associated with each trade. Panel A reports the regression results for institutional lambda versus individual lambda. Panel B reports the results of weighted least-square (WLS) cross-sectional regressions for institutional lambda versus individual lambda. Following Asparouhova, Bessembinder and Kalcheva (2010), the prior-month gross return (one plus the return in month t - 1) is employed as weighting variable for the WLS regression. All lambdas are divided by the stock price from previous month and then scaled up by 104. The t-statistics are computed by using Newey-West (1987) standard errors, with * represents statistical significance at the 10% level, ** represents statistical significance at the 5% level, *** represents statistical significance at the 1% level.
Panel A: Institutional Vs Individual Panel B: Institutional Vs Individual WLS
Expla. Var EXSRET0 EXSRET1 EXSRET2 Expla. Var EXSRET0 EXSRET1 EXSRET2
Intercept 0.060** 0.059* 0.025 Intercept 0.066** 0.062** 0.035
(2.42) (1.69) (0.90) (2.52) (2.03) (1.22)
Inst_lam 9.797*** 9.361*** 8.443*** Inst_lam 9.385*** 9.022*** 8.090***
(7.46) (7.21) (6.32) (7.36) (7.15) (5.98)
Ind_lam 1.849 1.644 1.030 Ind_lam 1.804 1.496 0.790
(1.22) (0.93) (0.87) (1.10) (0.86) (0.68)
SIZE -0.005*** -0.004*** -0.004*** SIZE -0.004*** -0.004*** -0.003**
(-4.23) (-3.85) (-2.75) (-4.07) (-3.11) (-2.28)
BM 0.016*** 0.014*** 0.012*** BM 0.014*** 0.013*** 0.011***
(5.62) (4.78) (3.91) (4.68) (4.55) (3.71)
SH_TURN -0.006*** -0.005*** -0.005*** SH_TURN -0.006*** -0.005*** -0.005***
(-3.94) (-3.56) (-3.14) (-3.87) (-3.48) (-3.13)
REV -0.021** -0.020** -0.018** REV -0.022** -0.020** -0.017*
(-2.30) (-2.20) (-1.98) (-2.26) (-2.12) (-1.83)
RET2_3 0.034*** 0.032*** 0.030*** RET2_3 0.035*** 0.032*** 0.031***
(5.21) (5.05) (4.68) (5.53) (5.25) (5.18)
RET4_6 0.008 0.005 0.004 RET4_6 0.009 0.006 0.005
32
(1.37) (0.93) (0.74) (1.58) (1.09) (0.96)
RET7_12 0.011*** 0.010*** 0.008** RET7_12 0.012*** 0.010*** 0.008***
(3.20) (2.70) (2.51) (3.09) (2.92) (2.71)
IVOL -0.059*** -0.059*** -0.042** IVOL -0.054*** -0.054*** -0.029**
(-2.78) (-2.74) (-2.13) (-2.66) (-2.60) (-2.03)
Amihud 0.020*** 0.017*** 0.015*** Amihud 0.019*** 0.016** 0.015**
(3.27) (3.12) (2.72) (3.01) (2.53) (2.45)
R2 0.179 0.150 0.128 R2 0.172 0.145 0.123
33
Table 5
Regression of announcement returns on pre-announcement abnormal level lambdasThis table reports the pooled panel regression of firm’s announcement cumulative abnormal returns on pre-announcement abnormal level lambdas and control variables. The dependent variable is the three-day [-1, +1]
cumulative abnormal return (CAR_3) around the announcement date . The SPPR value-weighted market
return is used as the benchmark for computing the CAR_3. SIZE denotes the natural logarithm of the market capitalization. BM is the natural logarithm of the book-to-market ratio. Price is the average stock price in
natural logarithm over the window [-60, -2] prior to the announcement date . SH_TURN represents the
average share turnover in natural logarithm over the window [-60, -2] prior to the announcement date .
Amihud is the average daily ratio of the absolute stock return to the dollar trading volume over the window [-
60, -2] prior to the announcement date . PastReturn is the buy-and-hold market-adjusted return over the
window [-60, -2] prior to the announcement date . ReturnStd is the standard deviation of daily stock return
over the window [-60, -2] prior to the announcement date . AL_Inst_buy/AL_Inst_sell is the pre-
announcement abnormal level institutional buy/sell lambda over the window [-10, -2]. AL_Ind_buy/AL_Ind_sell is the pre-announcement abnormal level individual buy/sell lambda over the window [-10, -2]. The t-statistics are computed by using Thompson (2011) robust standard errors clustered by firm and event.
Unscheduled Announcements
Expla. Var CAR_3 CAR_3 Expla. Var CAR_3 CAR_3
Intercept 0.1275*** 0.1198*** Intercept 0.1151*** 0.1077***
(3.63) (2.88) (3.43) (2.71)
AL_Inst_buy 0.1016** 0.0969* AL_Inst_sell -0.1396*** -0.1330***
(2.01) (1.92) (-2.86) (-2.78)
AL_Ind_buy 0.0326 0.0213 AL_Ind_sell -0.0341 -0.0102
(0.60) (0.39) (-0.48) (-0.13)
SIZE -0.0026 -0.0021 SIZE -0.0023 -0.0019
(-1.10) (-0.82) (-1.02) (-0.77)
BM -0.0086 -0.0033 BM -0.0071 -0.0031
(-0.93) (-0.36) (-0.76) (-0.32)
Price 0.0030 0.0028 Price 0.0025 0.0023
(1.32) (1.23) (1.10) (1.06)
SH_TURN -0.6753 -0.4772 SH_TURN -0.5538 -0.3509
(-0.95) (-0.68) (-0.81) (-0.52)
PastReturn -0.0191** -0.0158* PastReturn -0.0188** -0.0156*
(-2.31) (-1.95) (-2.28) (-1.91)
ReturnStd 0.3548*** 0.3401*** ReturnStd 0.3504*** 0.3363***
(2.68) (2.62) (2.66) (2.59)
Amihud 0.0641 0.0547 Amihud 0.0617 0.0514
(1.27) (1.09) (1.19) (1.06)
34
Year FE No Yes Year FE No Yes
Industry FE No Yes Industry FE No Yes
R2 0.0328 0.0559 R2 0.0349 0.0582
Fig. 1. Individual and institutional lambdas around the S&P/ASX 200 Index quarterly rebalancing announcement.This figure shows the averages and 95% confidence intervals for individual buy/sell lambda, institutional buy/sell lambda on removed stocks around the S&P/ASX 200 Index quarterly rebalancing announcement. The horizontal axis represents trading days surrounding the announcement date. Panel A presents the average magnitude of institutional buy lambda on removed stocks around the rebalance announcement date. Panel B presents the average magnitude of institutional sell lambda on removed stocks around the rebalance announcement date. Panel C presents the average magnitude of individual buy lambda on removed stocks around the rebalance announcement date. Panel D presents the average magnitude of individual sell lambda on removed stocks around the rebalance announcement date. The sample period includes all S&P/ASX 200 Index quarterly rebalancing removal over the period September 2000 to December 2012.
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