FNCE10002 Lecture Notes - Lecture 6: Expected Return, Systematic Risk, Confidence Interval

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Returns and portfolio theory i: measure returns earned on financial securities. Income/dividend yield + percentage price change: e. g. coupon paying bond, (cid:1844)= (cid:3005) (cid:3117)+ (cid:3117) Investor concern is typically with returns below the expected return (downside risk: (cid:4666)(cid:4667)=(cid:2870)=(cid:2869)[(cid:1844)(cid:2869) (cid:1831)(cid:4666)(cid:4667)](cid:2870)+ +[(cid:1844) (cid:1831)(cid:4666)(cid:4667)](cid:2870, (cid:4666)(cid:4667)= (cid:2869) (cid:2869) (cid:4666)(cid:1844) (cid:1844) (cid:4667)(cid:2870) =(cid:2869: (cid:1845)(cid:1830)(cid:4666)(cid:4667), (cid:4666)(cid:4667)= (cid:2869) (cid:2870)(cid:3095)exp( (cid:2869)(cid:2870)(cid:4672) (cid:3006)(cid:4666)(cid:4667) (cid:4673)(cid:2870), unrealistic assumption: normal distribution assumes unlimited, interpret the risk and return measures. Lecture: interpreting risks and return measures: assume returns are continuously and normally distributed downside loss potential while in reality the maximum loss is 100% 10. 3 historical returns of stocks and bonds: estimation error: using past returns to predict the future, standard error, provides an indication of how far the sample average might deviate from the expected return, se= sd(cid:4666)individual risk(cid:4667) Number of observations errors: 95% confidence interval: historical average return 2 standard, 68%: historical average return 1 standard error, limitations of expected return estimates.

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