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A 10-year research on 3 distinct portfolios and the market reveals the following information:
| Portfolio | Average Annual Return | Standard Deviation | Beta |
|---|---|---|---|
| 1 | 14% | 21 | 1.15 |
| 2 | 16% | 24 | 1.00 |
| 3 | 20% | 28 | 1.25 |
| S&P 500 | 12% | 20 | — |
Given that the risk-free rate of return is 6%, use the Sharpe measure to rank the portfolios from the lowest to the highest.
Explanation:
The Sharpe ratio is calculated using the formula:
Where:
Let's calculate the Sharpe ratios for each portfolio:
Portfolio 1:
Portfolio 2:
Portfolio 3:
Ranking from lowest to highest Sharpe ratio:
Therefore, the correct ranking from lowest to highest is 1, 2, 3, which corresponds to option D.
Note: The beta values and S&P 500 information are not needed for Sharpe ratio calculations, as Sharpe ratio uses total risk (standard deviation) rather than systematic risk (beta).