We examine the response of U.S. (VIX) and German (VDAX) implied volatility indices to the announcement of interest rate policy decisions by the Federal Open Market Committee (FOMC) and the European Central Bank (ECB). We confirm prior findings that VIX declines on FOMC meetings days. We present new findings that indicate that VDAX declines on FOMC meeting days, but is not related to ECB meeting days. VIX is unrelated to ECB meeting days. Taken collectively, our results indicate a prominent position for the FOMC in determining uncertainty levels both domestically and abroad relative to no relation between uncertainty levels and the ECB. JEL classification: G14, E44

We examine the response of U.S. (VIX) and German (VDAX) implied volatility indices to the announcement of interest rate policy decisions by the Federal Open Market Committee (FOMC) and the European Central Bank (ECB). We confirm prior findings that VIX declines on FOMC meetings days. We present new findings that indicate that VDAX declines on FOMC meeting days, but is not related to ECB meeting days. VIX is unrelated to ECB meeting days. Taken collectively, our results indicate a prominent position for the FOMC in determining uncertainty levels both domestically and abroad relative to no relation between uncertainty levels and the ECB. JEL classification: G14, E44