Diversification and risk
The graph shows the relationship between risk, measured as the standard deviation of a stock portfolio's return, and the number of different stocks in the portfolio for a hypothetical stock market.
014102030406040200RISK (Standard deviation of portfolio return)NUMBER OF STOCKS IN PORTFOLIO
True or False: Increasing the number of stocks in a portfolio reduces market risk.
True
False
Consider two stock portfolios. Portfolio A consists of 20 different stocks from firms in different industries. Portfolio B consists of 10 different stocks, also from firms in different industries. The return on Portfolio A is likely to be volatile than that of Portfolio B.
Suppose a stock analyst recommends buying stock in the following companies:
Company |
Industry |
---|---|
Toyonda | Automotive |
Saalvo | Automotive |
GMW | Automotive |
Honsubishi | Automotive |
Shexxon | Oil and gas |
Mobron | Oil and gas |
Airing | Aircraft |
Boebus | Aircraft |
Goohoo | Technology |
Pherk | Pharmaceutical |
Each of the following portfolios contains four of the stock picks. Which portfolio is the most diversified?
Boebus, Airing, Shexxon, Mobron
Toyonda, Honsubishi, Boebus, Airing
Pherk, Toyonda, Goohoo, Shexxon
Toyonda, Saalvo, GMW, Honsubishi
(1) False
Increasing number of stocks increases diversification, which reduces firm-specific risks but not market risk.
(2) The return on Portfolio A is likely to be Less volatile than that of Portfolio B.
(The higher the number of diversified stocks, the lower the volatility).
(3) Pherk, Toyonda, Goohoo, Shexxon
Since all four stocks are from different industries, this portfolio has maximum diversification.
Diversification and risk The graph shows the relationship between risk, measured as the standard deviation of a stock po...
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