FIN 4504 Lecture Notes - Lecture 9: Savings Account, Harry Markowitz, Risk Aversion

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Review: one risk-free & one risky asset. > portfolio weights: y [in risky] and (1-y) [in risk-free] Portfolio return = y e(rp) + (1-y)rf. Cal shows the risk return combinations available by investing in a risky portfolio and a risk-free one. If p is the market portfolio, then we call the line the capital market line (cml) An economic term referring to the total satisfaction received from consuming a good or service. > utility will be higher if e(r) is higher. > utility will be higher if 2 is lower. > a is a measure for risk aversion: higher a -> more risk averse. > meaning we need to find a common point between portfolio mean-variance attribute. Put cal & indifference curves together a(cid:374)d i(cid:374)(cid:448)estor"s prefere(cid:374)(cid:272)e. The tangent point provides the investor the greatest expected utility. The optimal weight on the risky asset is: > a: measure of risk aversion for a given investor.

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