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Rising Rates, Rising Risks? Unpacking the U.S. Stock Market Response to Inflation and Fed Hikes (2015–2025)

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  • Ihsen Abid

    (Department of Finance, College of Business, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11564, Saudi Arabia)

Abstract

This study investigates the dynamic relationship between key macroeconomic indicators, specifically inflation (CPI), the Federal Funds Rate, GDP growth, unemployment, and money supply, and U.S. stock market returns, represented by the S&P 500 index, over the period January 2015 to June 2025. The objective is to understand how inflation and monetary policy affect market performance in both the short and long run. Using an Autoregressive Distributed Lag (ARDL) modeling framework and Error Correction Model (ECM), the study examines monthly S&P 500 returns alongside macroeconomic variables, accounting for lagged effects and potential cointegration. The model captures both immediate and delayed impacts, employing the Bounds Testing approach to confirm long-run equilibrium relationships. Results show significant mean-reversion in stock returns, a delayed negative impact of inflation and interest rate increases, and a positive contemporaneous response to GDP growth. Unemployment exhibits a counterintuitive positive effect on returns, suggesting forward-looking investor expectations. The money supply also positively influences equity prices, supporting liquidity-based asset pricing theories. This paper provides updated empirical evidence on macro-finance linkages and highlights the complex interplay of monetary policy, inflation, and market expectations in shaping U.S. equity returns.

Suggested Citation

  • Ihsen Abid, 2025. "Rising Rates, Rising Risks? Unpacking the U.S. Stock Market Response to Inflation and Fed Hikes (2015–2025)," FinTech, MDPI, vol. 4(4), pages 1-21, October.
    • Handle: RePEc:gam:jfinte:v:4:y:2025:i:4:p:57-:d:1778327
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