Fiscal policy shocks and stock prices in the United States

Download PDF: Working Paper 48
This paper shows that fiscal policies seeking to stimulate long-run economic activity lead to higher stock prices
Authors: Haroon Mumtaz (Queen Mary University) and Konstantinos Theodoridis (ESM)
Abstract:
This paper uses structural vector autoregressive models (SVARs) to show that the response of US stock prices to fiscal shocks changed in 1980. Over the period 1955-1979, an expansionary spending or revenue shock was associated with higher stock prices. After 1980, the response of stock prices to the same shock became negative. Using a dynamic stochastic general equilibrium (DSGE) model with a detailed fiscal sector, we show the pre-1980 results may be driven by an expansion in supply after the fiscal shock. In contrast, endogenous growth mechanisms appear to be weaker in the post-1980 period with positive fiscal shocks pushing down consumption, total factor productivity (TFP), and causing inflation and the real interest rate to rise.
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Keywords: Fiscal policy shocks, Stock prices, VAR, FAVAR, DSGE
JEL codes: E24, E32, J64, C11