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We distinguish the measure of risk aversion from the slope coefficient in the linear relationship between the mean … excess return on a stock index and its variance. Even when risk aversion is constant, the latter can vary significantly with …
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This paper investigates the relation between returns on stock indices and their corresponding futures contracts in order to evaluate potential explanations for the pervasive yet anomalous evidence of positive, short-horizon portfolio autocorrelations. Using a simple theoretical framework, we...
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