This paper studies three different measures of monthly stock market volatility: the time-series volatility of daily market returns within the month; the cross-sectional volatility or 'dispersion' of daily returns on industry portfolios, relative to the market, within the month; and the...

We find evidence of infrequent shifts, or "regimes," in the mean of the asset valuation variable <i>cay_t</i> that are strongly associated with low-frequency fluctuations in the real federal funds rate, with low policy rates associated with high asset valuations, and vice versa. There is no evidence...