This article examines the impact of what is undoubtedly the most important
monetary regime change in U.S. history: the founding of the Federal Reserve
System. We find, using a (G)ARCH model, a significant reduction in interes
t rate uncertainty following the founding of the Fed. Additionally, we show
that the passage of the Aldrich-Vreeland Act in 1908, another significant
change in policy, also led to a reduction in interest rate uncertainty. The
se results are robust to alternative interest rare models, as well as to in
corporating the impact of other events important to financial markets in ou
r sample.