Using a novel no‐arbitrage model and extensive second‐moment data, we decompose conditional volatility of U.S. Treasury yields into volatilities of short‐rate expectations and term premia. Short‐rate expectations become more volatile than premia before recessions and during asset market distress. Correlation between shocks to premia and shocks to short‐rate expectations is close to zero on average and varies with the monetary policy stance. While Treasuries are nearly unexposed to variance shocks, investors pay a premium for hedging variance risk with derivatives. We illustrate the dynamics of the yield volatility components during and after the financial crisis.

We document that since 1994, the equity premium is earned entirely in weeks 0, 2, 4, and 6 in Federal Open Market Committee (FOMC) cycle time, that is, even weeks starting from the last FOMC meeting. We causally tie this fact to the Fed by studying intermeeting target changes, Fed funds futures, and internal Board of Governors meetings. The Fed has affected the stock market via unexpectedly accommodating policy, leading to large reductions in the equity premium. Evidence suggests systematic informal communication of Fed officials with the media and financial sector as a channel through which news about monetary policy has reached the market.