Question

Diversification and risk The graph shows the relationship between risk, measured as the standard deviation of a stock po...

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

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Answer #1

(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.

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Answer #2

2. is more

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