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Annual Conference

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Investment Finance

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May 2015

Is Information Risk Priced? Evidence from Abnormal Idiosyncratic Volatility

Bohui ZHANG, Yung Chiang YANG, Chu ZHANG
We propose a new, price-based measure of information risk called abnormal idiosyncratic volatility (AIV) that captures information asymmetry faced by uninformed investors. AIV is the idiosyncratic volatility prior to information events in excess of normal levels. Using earnings announcements as info...
Keywords: Information Risk, Idiosyncratic Volatility, Earnings Announcement, Expected Returns
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