Fed's stock market impact: Magnitudes, channels, shocks
A new Federal Reserve paper surveys and extends research on the central bank's effect on the stock market. It focuses on monetary policy surprises, pre-FOMC announcement drift, and the FOMC cycle in stock returns.
Unpacking the Fed's market footprint
The paper explores three key empirical findings: the effect of monetary policy surprises in narrow windows around Federal Open Market Committee (FOMC) announcements, the pre-FOMC announcement drift, and the FOMC cycle in stock returns.
It discusses the substantial magnitude of the Fed's impact, even on average stock returns over decades.
The authors identify various types of shocks, including pure monetary policy shocks, reaction function news, and information about the Fed's economic outlook.
Furthermore, the study examines asset pricing channels through which effects emerge, such as equity premia for Fed news or changes to yields and expected dividends.
Communication flows outside announcement windows are also highlighted as important.
The research emphasizes that Fed-induced changes to both yields and equity premia play significant roles, with less direct evidence available regarding cash flows.
For stocks, reaction function news appears to be more important than information effects from the Fed.
Shocks, channels, and the Taylor rule
The framework for understanding the Fed's effects on the stock market begins with estimating monetary policy shocks using high-frequency event studies around FOMC announcements.
A common approach involves analyzing interest rate surprises in a half-hour window, with a positive surprise typically predicted to lower stock market value.
These shocks can arise in three forms based on a simple Taylor rule framework: pure monetary policy shocks (error terms), news about the Fed's reaction function (including its inflation target), and news about the Fed's view of the economy (output gap, inflation gap, or natural real rate of interest).
The paper explains how the asset pricing channels—changes to real yields, equity premia, or expected real dividends—can transmit these shocks to stock prices.
Information can flow through formal channels like FOMC statements and press conferences, or informal channels such as newspaper articles with access to Fed sources.
A foundational, yet focused, analysis
This paper provides a robust synthesis of the mechanisms through which the Federal Reserve influences equity markets, offering a valuable framework for practitioners and academics alike.
While its detailed examination of conventional monetary policy and forward guidance is commendable, the explicit focus on the United States and less consistent findings for quantitative easing suggest avenues for broader application.
Future research could extend this analysis to cross-sectional effects across stocks and countries, enriching the understanding of global monetary policy transmission.