FINE 2000 Chapter Notes - Chapter 12: Market Risk, Weighted Arithmetic Mean, Risk Premium
Document Summary
Ch 12 risk, return and capital budgeting. The market portfolio - portfolio of all assets in the economy: used as a benchmark to measure the risk of individual stocks. Beta (b) - sensitivity of a stock"s return to the return on the market portfolio. Portfolio beta: the weighted average of the betas of the individual assets; (weights equal the proportion of wealth invested in each asset) For a portfolio with two stocks: b = (fraction of portfolio in 1st asset x b 1st asset) + (fraction of portfolio in 2nd asset x b 2nd asset) Risk and return and capital asset pricing model, capm. Market risk premium = market return return on risk-free asset. Benchmark betas beta of the risk-free asset = 0 beta of the market portfolio = 1. Capital asset pricing model (capm): theory of the relationship btw risk & return which states -> expected risk premium on any security = its beta x the market risk premium.