Investor sentiment and return predictability of economic policy uncertainty
Abstract
Both economic policy uncertainty (EPU) innovation and investor sentiment affect stock
market returns. However, their relative importance is typically examined separately in
the finance literature. This study concentrates on examining how different investor
sentiment regimes affect the relationship of EPU innovation and future stock market
returns. Using the Baker et al. (2016) news-based measure to capture the changes in
EPU in the United States and an indirect market-based index (Baker and Wurgler, 2006)
as a proxy for different sentiment regimes, we find that EPU innovation is negatively
correlated with future stock market returns. The negative predictive ability of changes
in EPU on future stock returns is only significant under a high-sentiment regime. After
adding the lagged business cycle and market volatility variables, the negative predictive
ability of changes in EPU on future stock returns is still better under a high-sentiment
regime than the negative predictive ability under a low-sentiment regime.