We develop an ex ante measure of the information content of earnings announcements that allows us to estimate the stock market's response to news in upcoming earnings releases. Exploiting a powerful setting in the option market, our measure of anticipated information content (the AIC) separates the magnitude of the stock market's reaction to earnings information from earnings uncertainty. Our results suggest that option traders rationally anticipate the sensitivity of stock prices to earnings information and they do so in a way that recognizes crosssectional and time-series differences in the strength of the link between returns and earnings. Specifically, we find the AIC positively correlates with the magnitude of the ex post stock market sensitivity to unexpected earnings. In further tests, we document that the AIC increases with earnings persistence, firm growth prospects, the richness of firms' information environments and the presence of sophisticated ownership structures and decreases with anticipated discount rates. This paper sheds light on whether and how information content manifests in the option market and, in so doing, it introduces several opportunities for future study.Keywords: information content of earnings announcements; options; volatility; institutional ownership; information environment; return-earnings relation; earnings response coefficients JEL Classification: M41; M49; G14; G29 This paper benefited from the insightful comments of Eli Bartov, Daniel Beneish, Brian Cadman, Gavin Cassar, Melissa Lewis, Alexander Nezlobin, Jim Ohlson, Steve Ryan, Jerry Salamon, Wayne Thomas, Andrey Ukhov, Jim Wahlen, workshop participants at Indiana University and the University of Utah, and participants at the 2009 New York University Summer Camp and the 2010 Columbia-NYU Workshop. We thank Brian Bushee for supplying institutional ownership classification coding. 1
IntroductionIn this paper, we argue that the listed equity options market rationally anticipates the information content of upcoming earnings releases. Because option values closely relate to the market's estimate of the stock return volatility over the option's life, option traders must consider the potential effect that predictable news events have on this volatility. We use this relation between current option prices and future news-induced stock price volatility to extract a forecast of the information content of earnings announcements. In so doing, we isolate the market's anticipation of the magnitude of the stock market's reaction to earnings information from its uncertainty about the level of earnings and show that this predicted sensitivity allows for crosssectional and time-series differences in the link between returns and earnings.Absent a volatility-increasing event, options with little time to expiration and with an exercise price approximately equal to their underlying stock price should be virtually worthless (Black and Scholes, 1973). Yet, empirical evidence suggests that short-dated, at-the-money options expiring soon af...