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004 Valuing Cash Flows
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Transcript of 004 Valuing Cash Flows
SKOOL COMPUTER EDUCATION
The DerivativesVALUING CASH FLOWS
SKOOL COMPUTER EDUCATION
SKOOL COMPUTER EDUCATION
Introduction to State Prices
• Consider a world that can be in two distinct states tomorrow.
• The realization of tomorrow's state affects the agent's utility, not necessarily in a financial way.
• We will denote for convenience the two states with u-standing for 'up', and d-standing for 'down'.
• We also make the assumption that if the agent could choose tomorrow's state, she would choose 'up'. For example, such states could be
SKOOL COMPUTER EDUCATION
Introduction to State Prices
• It is important to observe that we have not mentioned at all the probabilities of ending up 'up' or 'down' tomorrow.
SKOOL COMPUTER EDUCATION
Introduction to State Prices
SKOOL COMPUTER EDUCATION
THE PREFERENCES• Suppose that the agents utility, which has to be state dependent, is of the standard form, illustrated in figure
• The utility has to be increasing and concave.
SKOOL COMPUTER EDUCATION
THE PREFERENCES
• The money the agent looses if the state is 'down' is the same as the money she would make if the state was 'up'.
• Also assume that the probabilities are equal, in order to eliminate the aforementioned likelihood effect.
• Even in this [perfectly symmetric] case, the special utility shape implies that the absolute utility changes are not equal: The drop of the utility in the 'down' state is higher than the utility gains in the 'up' state.
• A rational agent would therefore value the 'down' state with a higher state price: more money would be happily paid out in order to ensure a higher consumption in the 'down' state.
SKOOL COMPUTER EDUCATION
THE PREFERENCES
SKOOL COMPUTER EDUCATION
THE PREFERENCES
SKOOL COMPUTER EDUCATION
THE PRICING KERNEL