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Question 1. Consider the single index model. Suppose an asset has a negative beta and an alpha of zero. Would it ever make se
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Ans-1) In Single Index Model, the asset return is influenced by market which is reflected by beta and the value of alpha shows the excess returns. If the value of alpha is zero and beta is in negative, that would mean the market is moving down (due to negative beta) and there are no abnormal rerturns as well( due to alpha zero). Hence, it would not make sense for the investor to invest as there is a high risk with very low or no returns.

Ans-2) Under Efficient Market Hypothesis , a financial market to be efficient means that the asset prices are incorporated with all the information relating to the actual value of the asset. The more the quantity and quality of information is there, more the maket is efficient. In other words all the traders have the same information regarding the value of the asset (information is depicted by asset price).

This sense of efficiency means that the future prices of the assets are neither undervalued nor overvalued. It is not possible to outperform the market and no opportunity for arbitrage and gain above market returns.

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