Chapter Nine Flashcards
What type of risk can diversification eliminate?
It can only eliminate unsystematic risk
What else can unsystematic risk be called?
Specific, non-systematic, or idiosyncratic risk
What does positive correlation imply on two securities?
On average they move in the same direction
What is perfect positive correlation between two securities?
They move in the same direction to the same extent
What is true of idiosyncratic risk?
It is specific to an investment and can be diversified away
Idiosyncratic risk equals what?
Idiosyncratic risk = specific risk = diversifiable risk = unsystematic risk
What does moving against the market imply in terms of beta?
It implies a negative beta
What does less volatility than the market in terms of beta?
A value less than 1
CAPM formula?
Capital asset expected return = Risk free rate of interest + (beta * expected return of the market) - risk free rate of interest
Beta formula
Covariance (i,m) / variance of the market
How can beta be correctly described from assumptions of CAPM?
- The proportion of a given fund that would have to be invested in the market portfolio to create a given risk/return profile.
- An index of a security’s systematic risk relative to that of the market
What risks would remain within a randomly selected portfolio of securities?
Market risk and systematic risk as they cannot be diversified away
What does CAPM suggest about the return of a portfolio with the highest beta?
The portfolio with the highest beta will have the highest expected return
If a portfolio has no specific or systematic risk, what rate of return willl be obtained?
Risk-free rate
What will a rational investor expect to recieve in terms of risk?
Expect to receive a higher return on an investment that has a higher risk
Can specific risk be reduced by diversification?
Yes
Market risk premium formula?
Market risk premium = r_m - r_f
Expected return of a portfolio using beta, market risk premium and expected market return?
Expected return of a portfolio = Risk free rate + beta(expected market return - risk free rate)
What is the best way to diversify?
Choose shares that are uncorrelated which means that if one goes up in value the other does not, diversifying the portfolio and reducing risk. Negatively correlated shares would also be a good way to do this
What is the arbitrage pricing theory?
It is a multi factor model in which the factors are not specified
What is a limitation of the APT
It’s difficult in establishing relevant betas and their stability
The CAPM asserts that portfolio returns are best explained by what risk?
Systematic risk
The covariance of the returns of two securities can be caluclated as?
The correlation of the securities multiplied by the product of their standard deviations