# Financial Theory

Yale, , Prof. John Geanakoplos

Updated On 02 Feb, 19

Yale, , Prof. John Geanakoplos

Updated On 02 Feb, 19

Why Finance? - Utilities, Endowments, and Equilibrium - Computing Equilibrium - Efficiency, Assets, and Time - Present Value Prices and the Real Rate of Interest - Irving Fisher's Impatience Theory of Interest - Shakespeare's Merchant of Venice and Collateral, Present Value and the Vocabulary of Finance - How a Long-Lived Institution Figures an Annual Budget. Yield - Yield Curve Arbitrage - Dynamic Present Value - Social Security - Overlapping Generations Models of the Economy - Demography and Asset Pricing: Will the Stock Market Decline when the Baby Boomers Retire? - Quantifying Uncertainty and Risk - Uncertainty and the Rational Expectations Hypothesis - Backward Induction and Optimal Stopping Times - Callable Bonds and the Mortgage Prepayment Option - Modeling Mortgage Prepayments and Valuing Mortgages - History of the Mortgage Market: A Personal Narrative - Dynamic Hedging - Dynamic Hedging and Average Life - Risk Aversion and the Capital Asset Pricing Theorem - The Mutual Fund Theorem and Covariance Pricing Theorems - Risk, Return, and Social Security - The Leverage Cycle and the Subprime Mortgage Crisis - The Leverage Cycle and Crashes

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Financial Theory (ECON 251)

Until now we have ignored risk aversion. The Bernoulli brothers were the first to suggest a tractable way of representing risk aversion. They pointed out that an explanation of the St. Petersburg paradox might be that people care about expected utility instead of expected income, where utility is some concave function, such as the logarithm. One of the most famous and important models in financial economics is the Capital Asset Pricing Model, which can be derived from the hypothesis that every agent has a (different) quadratic utility. Much of the modern mutual fund industry is based on the implications of this model. The model describes what happens to prices and asset holdings in general equilibrium when the underlying risks cant be hedged in the aggregate. It turns out that the tools we developed in the beginning of this course provide an answer to this question.

Complete course materials are available at the Open Yale Courses website httpopen.yale.educourses

This course was recorded in Fall 2009.

Sam

Sep 12, 2018

Excellent course helped me understand topic that i couldn't while attendinfg my college.

Dembe

March 29, 2019

Great course. Thank you very much.