Topic 11: Return, Risk and the Security Market line I (Sem 2) Flashcards
Risk Premium
The return on a risky asset less than the return on the risk-free security.
The higher the risk premium, the more risky the investment
Government treasury bills are used as the risk-free asset
Expected return
The return on a risky asset expected in the future
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Quantifying Risk Variance
The average squared difference between the return and the expected return.
Standard deviation
The positive square root of the variance
Calculating Variance
1) Calculate the squared deviations of the return for each state of the economy using the expected return.
2) Multiply each possible squared deviation by the probability of each state of the economy.
3) Add these up
The result is the variance
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Portfolio
A group of assets such as equities and bonds held by an investor
Portfolio weight
The percentage of a portfolio’s total value that is in a particular asset
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Diversification
Spreading an investment across a number of assets. Doing this will eliminate some, but not all of the risk.
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