Inflation, Monetary Policy, and Portfolio Decisions of U.S. Households.

This article investigates how changes in U.S. monetary policy, specifically interest rate increases measured by the federal funds effective rate (FFER), affect household portfolio decisions. Contrary to traditional portfolio choice models predicting reduced equity exposure with higher interest rates, the study finds that U.S. households increase both stock market participation and allocations to risky assets when interest rates rise. The authors attribute this behavior to inflation hedging motives, showing that households with greater experienced inflation—especially those with higher income, education, and nominal wealth—tend to increase equity risk exposure to protect purchasing power. Supporting evidence from a large U.S. discount brokerage indicates that investors sensitive to inflation overweight stocks in sectors with strong inflation-hedging potential. These findings suggest that inflation concerns influence household investment strategies and may affect the transmission and effectiveness of monetary policy.