Uncertainty About Government Policy and Stock Prices
62 Pages Posted: 29 Jun 2010 Last revised: 27 Jul 2024
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Uncertainty about Government Policy and Stock Prices
Uncertainty About Government Policy and Stock Prices
Uncertainty About Government Policy and Stock Prices
Uncertainty About Government Policy and Stock Prices
Date Written: June 2010
Abstract
We analyze how changes in government policy affect stock prices. Our general equilibrium model features uncertainty about government policy and a government that has both economic and non-economic motives. The government tends to change its policy after performance downturns in the private sector. Stock prices fall at the announcements of policy changes, on average. The price fall is expected to be large if uncertainty about government policy is large, as well as if the policy change is preceded by a short or shallow downturn. Policy changes increase volatility, risk premia, and correlations among stocks. The jump risk premium associated with policy decisions is positive, on average.
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