Pre-FOMC Information Asymmetry
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abstract
We uncover informed trading on the days before federal open market committee (FOMC) announcements. We show that this informed trading can explain the pre-FOMC announcement drift in the stock market, by contributing to the resolution of uncertainty before announcement. We document three distinct novel evidences supporting this. First, we show that U.S. corporate bond yield changes in the blackout period before FOMC announcements can predict monetary policy surprises, with about 30% R-squared. Second, and consistent with informed trading, we show that corporate bond customers tend to buy before upcoming expansionary FOMC surprises and sell before contractionary FOMC surprises. Finally, we uncover pre-FOMC information flow from corporate bond to the stock market by showing that (a) corporate bond yield changes Granger-cause stock market pre-FOMC movements, and (b) lagged corporate bond customer-dealer trade imbalances can explain pre-FOMC stock market returns, and the pre-announcement drift.
