Using Leverage to Offset the Negative Carry of Tail ...in your portfolio Low basis risk No gap risk...
Transcript of Using Leverage to Offset the Negative Carry of Tail ...in your portfolio Low basis risk No gap risk...
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Using Leverage to Offset the Negative Carry of Tail Protection Across
Different Markets
November 2012
Disclaimer: The methods, tests and results described herein represent exploratory investigations done by Western Asset Management Company and are meant to stimulate discussion. Readers should not rely on these results and
should do their own verifications/investigations before making any decisions.
Robert Gingrich
This presentation is printed on 100% recycled paper
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Why tail protection?
Some methods for tail protection
Carry and tail protection
Description of the numerical model
Results in different markets and time frames
Overview
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Tail risk is risk of unusually large investment losses over a short period
Why is tail risk bad? In addition to the fact that losing money is always bad, tail risk can be
particularly harmful for portfolio managers/investors because a tail event tends to lead to
redemptions at the worst time (i.e., forced selling of risk assets right at the time when no one
wants risk assets). Conceptually, money managers are “short a put” on their own portfolio
Tail protection is an attempt to get “long a put” on a portfolio (conceptually)
Puts cost money (and have negative carry), and the balance between the amount of protection
one can get for a certain cost can be very unstable/hard to predict.
In this talk I’ll use a variety of historical simulations to get an estimate of what the
protection/cost tradeoff might be and what methods can improve the tradeoff
Why Tail Protection?
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Methods to Create Tail Protection
Method Pros Cons
Find a broker and pay them to
insure your portfolio against a
certain level of loss
No “basis risk”
No gap risk
Fees are likely large
Lack of liquidity/depth
Counterparty risk
Buy puts on the main positions
in your portfolio
Low basis risk
No gap risk
Put markets may be illiquid/non-
existent
Hedging individual positions may be
over hedging/expensive
Sell out of or hedge positions
if/when they fall (e.g., CPPI or put
replication)
Low basis risk
Good liquidity if hedging with a
liquid index
Still has the negative carry of a put
You hold the gap risk, i.e., needs fast
execution in a tail event (e.g., Oct
1987)
Buy puts on a liquid index (e.g.,
SPX) that’s well correlated with
the active portfolio
Good liquidity/depth
No gap risk
Some basis risk
Buy alternative/exotic high
convexity/negatively correlated
instruments relying on “when
markets crash correlations go to
one” e.g., currency options,
credit tranches, variance swaps,
VIX options
May find a “diamond in the
rough” i.e., cheap security with
good tail protection properties
Some securities have good
liquidity (e.g., currency options,
TSY futures options)
Low gap risk
Basis risk. Correlations don’t actually
go to one. Every market crash is
different and while the direction of
some markets in a crash may be
predictable, the size of the move can
be hard to predict.
Most exotic options can’t be done in
size
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S&P options are one of the oldest and most liquid options markets
People have been tracking the implied volatilities for 26 years (VIX/VXO) allowing a longer
historical analysis
One can obtain a volatility surface for maturities out several years and strikes 20% out of the
money going back over a decade
Good liquidity and depth means bid/ask costs are lower and a larger portfolio can be protected
The primary risk of most portfolios is usually well correlated to S&P 500
Why Focus on S&P 500 Index Puts?
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Define carry as the return one makes if “nothing happens”
Puts (and calls) have negative carry or theta bleed as the time value decays away
Generally, one gets positive carry from strategies that take on risk and negative carry from
strategies the reduce risk like tail protection or buying a put
Claim: any method to cancel the negative carry of tail protection or create “carry neutral” tail
protection necessarily introduces some additional risk to the portfolio (if you know a way to
get positive carry without taking on risk please tell me…)
What Does Tail Protection Cost?
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Some Methods for “Carry Neutral” Tail Protection
Method Risks Sell calls to fund puts Lose upside in a rally (costly in the long run)
Put skew works against you
Buy receiver swaption (betting that rates go down in a
crash) on a forward rate with significant curve rolldown.
Sensitive to a steepening of the curve
Basis risk
Sell at the money put and buy two out of the money puts for
no cost.
Additional bid/ask costs
Moderately down market
Put skew works against you
Lever up the main portfolio (increasing its positive carry) Basis risk
Flat market still has negative carry
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We developed a strategy that has a well defined maximum cost (negative carry) and protection
that is persistent over time
Uses S&P 500 puts bought with a monthly percentage contribution from a “main” portfolio (e.g.,
US equities, HY bonds, world equities, EM equities, commodities)
Choose a maturity (e.g., 3M, 1Y) and a strike (% of current S&P 500) and roll the entire option
portfolio to the new maturity/strike each month
Monetization: if the value of the option portfolio exceeds a given percentage of the main
portfolio, the excess options will be sold and used to purchase more of the main portfolio
Leverage: a leverage value of 110% means that every month 10% of the main portfolio is
borrowed at the current risk free rate and reinvested in the main portfolio
An Algorithmic Strategy
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Use volatility surface data going back to 2000 to capture a variety of bull and bear markets and
because there was liquidity during that time
Do a quadratic regression of each point on the surface against VIX
Use VIX/VXO (which goes back to 1986) to extrapolate the surface to earlier times
I emphasize historical simulation because the relationship between S&P 500 and its volatility
surface is complicated/has memory, i.e., I haven’t seem a model of the relationship between
the two that seems reliable over time
Volatility Surface
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Volatility Surface
80%
100%
120%
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
30.00%
1/121/4 1/2
1 2
3
stri
ke
tenor
Actual Surface 07 Oct 04 VIX=15%
0.00%-5.00% 5.00%-10.00%10.00%-15.00% 15.00%-20.00%
80%
100%
120%
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
30.00%
1/121/4 1/2
1 2
3
stri
ke
tenor
Fitted surface 07 Oct 04 VIX=15%
0.00%-5.00% 5.00%-10.00% 10.00%-15.00%15.00%-20.00% 20.00%-25.00% 25.00%-30.00%
80%
100%
120%
0.00%5.00%10.00%15.00%20.00%25.00%30.00%35.00%40.00%45.00%50.00%55.00%60.00%65.00%70.00%
1/121/4 1/2
1 2
3
stri
ke
tenor
Fitted Surface 05 Dec 08 VIX=60%0.00%-5.00% 5.00%-10.00% 10.00%-15.00%15.00%-20.00% 20.00%-25.00% 25.00%-30.00%30.00%-35.00% 35.00%-40.00% 40.00%-45.00%45.00%-50.00% 50.00%-55.00% 55.00%-60.00%
80%
100%
120%
0.00%5.00%10.00%15.00%20.00%25.00%30.00%35.00%40.00%45.00%50.00%55.00%60.00%65.00%70.00%75.00%
1/121/4 1/2
1 2
3
stri
ke
tenor
Actual Surface 05 Dec 08 VIX=60%0.00%-5.00% 5.00%-10.00% 10.00%-15.00%
15.00%-20.00% 20.00%-25.00% 25.00%-30.00%
30.00%-35.00% 35.00%-40.00% 40.00%-45.00%
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What Happens if We Buy Short-Dated (1 Month) Options?
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 999.0%
Put Option
Strike 90%
Maturity (yr) 0.083
Portfolio
Start date 1/31/1986
Leverage factor 100%
S&P 500 TR No Protection With Protection
Excess log return (annual) 5.87% 3.27%
Stdev excess log return (annual) 15.93% 15.57%
Sharpe Ratio (annualized) 0.37 0.21
5% Value at Risk (monthly) -7.48% -8.41%
Average shortfall 5% (monthly) -11.07% -10.95%
Max drawdown -51% -54%
Increase in Sharpe -0.16
Ratio of shortfall 99%
Ratio of drawdowns 106%
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0
5
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-25 -20 -15 -10 -5 0 5 10 15 20
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection S&P 500 TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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-25
-20
-15
-10
-5
0
5
10
15
20
-30 -20 -10 0 10 20
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection S&P 500 TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
0
20
40
60
80
100
120
1982 1987 1993 1998 2004 2009 2014
Tai
l Val
ue (%
of M
ain)
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
What Happens if We Buy 1-Year Options but no Monetization/Leverage?
No Protection With Protection
Excess log return (annual) 5.87% 3.30%
Stdev excess log return (annual) 15.93% 12.31%
Sharpe Ratio (annualized) 0.37 0.27
5% Value at Risk (monthly) -7.48% -4.96%
Average shortfall 5% (monthly) -11.07% -8.63%
Max drawdown -51% -37%
Increase in Sharpe -0.10
Ratio of shortfall 78%
Ratio of drawdowns 73%
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 999.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 100%
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-25
-20
-15
-10
-5
0
5
10
15
20
-30 -20 -10 0 10 20
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection S&P 500 TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
Monetize at a Level of 20% of the Main Portfolio
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 5.87% 5.44%
Stdev excess log return (annual) 15.93% 11.34%
Sharpe Ratio (annualized) 0.37 0.48
5% Value at rRsk (monthly) -7.48% -4.44%
Average shortfall 5% (monthly) -11.07% -6.82%
Max drawdown -51% -27%
Increase in Sharpe 0.11
Ratio of shortfall 62%
Ratio of drawdowns 54%
0
5
10
15
20
25
1982 1987 1993 1998 2004 2009 2014
Tai
l Val
ue (%
of M
ain)
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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Expected Return is Still Lower
0
20
40
60
80
100
120
140
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
S&P 500 TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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0
20
40
60
80
100
120
140
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
S&P 500 TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
With Moderate Leverage
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 110%
No Protection With Protection
Excess log return (annual) 5.87% 6.00%
Stdev excess log return (annual) 15.93% 12.73%
Sharpe Ratio (annualized) 0.37 0.47
5% Value at Risk (monthly) -7.48% -5.12%
Average shortfall 5% (monthly) -11.07% -7.76%
Max drawdown -51% -31%
Increase in Sharpe 0.10
Ratio of shortfall 70%
Ratio of drawdowns 61%
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What about Estimated Bid/Ask Spread?
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 110%
VIX Bid/Ask
15% 0.30%
60% 0.70%
Without Bid/Ask
No Protection With Protection
Excess log return (annual) 5.87% 5.16%
Stdev excess log return (annual) 15.93% 13.28%
Sharpe Ratio (annualized) 0.37 0.39
5% Value at Risk (monthly) -7.48% -5.27%
Average shortfall 5% (monthly) -11.07% -8.17%
Max drawdown -51% -39%
Increase in Sharpe 0.02
Ratio of shortfall 74%
Ratio of drawdowns 76%
With Bid/Ask
No Protection With Protection
Excess log return (annual) 5.87% 6.00%
Stdev excess log return (annual) 15.93% 12.73%
Sharpe Ratio (annualized) 0.37 0.47
5% Value at Risk (monthly) -7.48% -5.12%
Average shortfall 5% (monthly) -11.07% -7.76%
Max drawdown -51% -31%
Increase in Sharpe 0.10
Ratio of shortfall 70%
Ratio of drawdowns 61%
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0
20
40
60
80
100
120
140
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
S&P 500 TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
Can Leverage make up for Bid/Ask Spread?
VIX Bid/Ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 125%
Increasing leverage to 125%
No Protection With Protection
Excess log return (annual) 5.87% 5.95%
Stdev excess log return (annual) 15.93% 15.49%
Sharpe Ratio (annualized) 0.37 0.38
5% Value at Risk (monthly) -7.48% -6.09%
Average shortfall 5% (monthly) -11.07% -9.63%
Max drawdown -51% -44%
Increase in Sharpe 0.02
Ratio of shortfall 87%
Ratio of drawdowns 86%
Yes, but only barely…
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0
2
4
6
8
10
12
14
16
1995 1998 2001 2004 2006 2009 2012 2014
US
D (m
illio
ns)
S&P 500 TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
What about a Different Time Frame?
VIX Bid/Ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/2000
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 0.12% 0.38%
Stdev excess log return (annual) 16.31% 10.05%
Sharpe Ratio (annualized) 0.01 0.04
5% Value at Risk (monthly) -8.37% -4.50%
Average shortfall 5% (monthly) -10.76% -5.64%
Max drawdown -51% -34%
Increase in Sharpe 0.03
Ratio of shortfall 52%
Ratio of drawdowns 67%
Improved returns
without leverage
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-20
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0
5
10
15
-20 -15 -10 -5 0 5 10 15
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection Barclays US High-Yield TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
High-Yield US Corporate (Correlation to S&P 500 is 58%)
VIX bid_ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bp/yr 125
Upfrtont cost 125
Max % portfolio 10.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 4.94% 4.01%
Stdev excess log return (annual) 9.05% 7.44%
Sharpe Ratio (annualized) 0.55 0.54
5% value at Risk (monthly) -3.33% -3.11%
Average shortfall 5% (monthly) -6.36% -4.92%
Max drawdown -33% -24%
Increase in Sharpe -0.01
Ratio of shortfall 77%
Ratio of drawdowns 72%
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High-Yield US Corporate (Correlation to S&P 500 is 58%)
0
20
40
60
80
100
120
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
Barclays US HY TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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World Equities (Correlation to S&P 500 is 69%)
VIX Bid/Ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 3.84% 2.64%
Stdev excess log return (annual) 18.41% 15.22%
Sharpe Ratio (annualized) 0.21 0.17
5% Value at Risk (monthly) -9.46% -7.22%
Average shortfall 5% (monthly) -12.49% -9.17%
Max drawdown -56% -43%
Increase in Sharpe -0.04
Ratio of shortfall 73%
Ratio of drawdowns 76%
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-5
0
5
10
15
20
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Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection EAFE (World Equity) TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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World Equities (Correlation to S&P 500 is 69%)
0
20
40
60
80
100
120
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
EAFE (World Equity) TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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EM Equities (Correlation to S&P 500 is 67%)
VIX Bid/Ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bps/yr 300
Upfrtont cost 300
Max % portfolio 24.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 12/31/1987
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 8.25% 6.79%
Stdev excess log return (annual) 24.59% 20.51%
Sharpe Ratio (annualized) 0.34 0.33
5% Value at Risk (monthly) -11.16% -9.59%
Average shortfall 5% (monthly) -17.06% -13.43%
Max drawdown -62% -57%
Increase in sharpe 0.00
Ratio of shortfall 79%
Ratio of drawdowns 92%
-40
-30
-20
-10
0
10
20
30
-40 -30 -20 -10 0 10 20 30
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection MSCI Emerging Market TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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EM Equities (Correlation to S&P 500 is 67%)
0
50
100
150
200
250
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
MSCI Emerging Market TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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Commodities (Correlation to S&P 500 is 16%)
VIX Bid/Ask
15% 0.30%
60% 0.70%
Tail Fund
Cost bps/yr 250
Upfrtont cost 250
Max % portfolio 20.0%
Put Option
Strike 90%
Maturity (yr) 1.000
Portfolio
Start date 1/31/1986
Leverage factor 100%
No Protection With Protection
Excess log return (annual) 3.40% 1.77%
Stdev excess log return (annual) 20.72% 19.71%
Sharpe Ratio (annualized) 0.16 0.09
5% Value at Risk (monthly) -9.88% -10.42%
Average shortfall 5% (monthly) -14.05% -12.79%
Max drawdown -68% -57%
Increase in Sharpe -0.07
Ratio of shortfall 91%
Ratio of drawdowns 84%
-40
-30
-20
-10
0
10
20
30
-40 -30 -20 -10 0 10 20 30
Por
tfolio
Ret
urn
(%)
Market Return (%)
Return with Protection GSCI (Commodity) TR
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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Commodities (Correlation to S&P 500 is 16%)
0
20
40
60
80
100
120
140
160
1982 1987 1993 1998 2004 2009 2014
US
D (m
illio
ns)
GSCI (Commodity) TR value Portfolio with Protection Cash Value
Source: Western Asset, Bloomberg, Credit Suisse. As of 30 Sep 12
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Starting the Simulation in 2000
Barcap US HY TR No Protection With Protection
Excess log return (annual) 5.55% 5.02%
Stdev excess log return (annual) 10.96% 8.51%
Sharpe Ratio (annualized) 0.51 0.59
5% Value at Risk (monthly) -3.83% -3.15%
Average shortfall 5% (monthly) -7.83% -5.54%
Max drawdown -33% -24%
Increase in Sharpe 0.08
Ratio of shortfall 71%
Ratio of drawdowns 72%
EAFE (world equity) TR No Protection With Protection
Excess log return (annual) 0.18% 0.59%
Stdev excess log return (annual) 18.67% 12.94%
Sharpe Ratio (annualized) 0.01 0.05
5% Value at Risk (monthly) -10.34% -5.49%
Average Shortfall 5% (monthly) -13.17% -8.02%
Max drawdown -56% -42%
Increase in Sharpe 0.04
Ratio of shortfall 61%
Ratio of drawdowns 74%
MSCI Emerging Market TR No Protection With Protection
Excess log return (annual) 6.05% 6.30%
Stdev excess log return (annual) 24.91% 18.02%
Sharpe Ratio (annualized) 0.24 0.35
5% Value at Risk (monthly) -10.76% -8.17%
Average shortfall 5% (monthly) -16.44% -10.01%
Max drawdown -62% -41%
Increase in Sharpe 0.11
Ratio of shortfall 61%
Ratio of drawdowns 66%
GSCI (Commodity) TR No Protection With Protection
Excess log return (annual) 2.19% 1.63%
Stdev excess log return (annual) 24.91% 23.01%
Sharpe Ratio (annualized) 0.09 0.07
5% Value at Risk (monthly) -13.01% -12.00%
Average shortfall 5% (monthly) -16.68% -14.34%
Max drawdown -68% -57%
Increase in Sharpe -0.02
Ratio of shortfall 86%
Ratio of drawdowns 84%
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Appendix
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Biographies
Note: Western Asset experience reflects current position title and hire date.
ROBERT GINGRICH11 Years Experience
– Western Asset Management Company – Risk Modeler/ Manager, 2010-
– Pacific Investment Management Company – Financial Engineer, 2004-2010
– Jet Propulsion Laboratory – National Research Council Research Associate, 2001-2003
– California Institute of Technology, M.S., Ph.D. Theoretical Physics
– University of California, Santa Cruz, B.S., B.A.
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29
Risk Disclosure
For RFPs and
Presentations – US
© Western Asset Management Company 2012. This publication is the property of Western Asset Management Company and is intended for the sole use of
its clients, consultants, and other intended recipients. It should not be forwarded to any other person. Contents herein should be treated as confidential and
proprietary information. This material may not be reproduced or used in any form or medium without express written permission.
Past results are not indicative of future investment results. This publication is for informational purposes only and reflects the current opinions of Western
Asset Management. Information contained herein is believed to be accurate, but cannot be guaranteed. Opinions represented are not intended as an offer or
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