Fundamental uncertainty and stock market volatility

Abstract

We provide empirical evidence on the link between stock market volatility and macroeconomic uncertainty. We show that US stock market volatility is significantly related to the dispersion in economic forecasts from participants in the Survey of Professional Forecasters over the period 1969 to 1996. This link is much stronger than that between stock market volatility and the more traditional time-series measures of macroeconomic volatility, but disappears from 1997 onwards. This coincides with a previously documented regime shift in stock volatility. Macroeconomic uncertainty is also able to explain and forecast the volatilities of the Fama and French factors SMB, HML and UMD.