Finance Midterm 2 Flashcards
Volatility is measured by:
- Variance
- Standard Deviation
Volatility of returns is what is considered as
Risk
Diversification:
Strategy designed to reduce risk by spreading the portfolio across many investments. This is possible because assets possess two kinds of risk.
Unique risk:
Risk factors affecting only that firm. Also called specific, diversifiable or non-systematic risk
Market risk:
Economy-wide (macroeconomic) source of risk that affects the overall stock market. Also called systematic or non-diversifiable risk
Portfolio Risk:
Portfolio standard deviation depends on the individuals stocks’ standard deviation and also on their correlation to one another
You cannot eliminate all risk from a portfolio by adding
Securities
Typically, once you get beyond 15 stocks, adding more stocks does
Very little to reduce the risk of the portfolio
The risk that cannot be diversified away is called:
Market risk (or systematic or non-diversifiable risk)
For reasonably well diversified portfolio
Only market risk matter
Capital Asset Pricing Model (CAPM)
A Model to analyze the risk and required rates of return on assets when held in portfolios
7 assumptions of CAPM:
- Investors choose among portfolios on the basis of means and standard deviation
- Individuals can borrow and lend at the risk-free rate
- Investors have homogeneous expectations
- Assets are perfectly divisible and liquid
- Not transactions costs or taxes
- Investors are price takers
- Quantities of all assets are given and fixed
The Market Portfolio:
Portfolio of all assets in the economy. In practice a broad stock market index, such as the S&P/TSX or S&P Composite Index, is used to represent the market
The market portfolio is used as a
Benchmark to measure the risk of individual stock
Beta
Sensitivity of a stock’s return on the market portfolio and a measure of market risk
Portfolio Beta
The weighted average of the betas of the individual assets; with the weight being equal to the proportion of wealth invested in each asset
Market Risk Premium
The difference between the expected return on the market portfolio and the interest rate on Treasury bills (risk free asset)
Since the return on the t-bill is fixed and unaffected by what happens in the market;
The beta of the risk-free asset is zero