Intra–day Behavior of Treasury Sector Index Option Implied Volatilities around Macroeconomic Announcements

Andrea J. Heuson and Tie Su

The Financial Review, 2003, vol. 38, issue 1, 161-177

Abstract: If option implied volatility is an unbiased, efficient forecast of future return volatility in the underlying asset, then we should be able to predict its path around macroeconomic announcements from responses in cash markets. Regressions show that volatilities rise the afternoon before announcements that move cash markets, and that post–announcement volatilities return to normal as rapidly as cash prices do. Although implied volatilities are predictable, the Treasury options market is efficient since informed traders do not earn arbitrage profits once we account for trading costs.

Date: 2003
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