A Monetary Policy Asset Pricing Model

Alp Simsek and Ricardo Caballero ()

No 18393, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We propose a model where the central bank's ("the Fed's") interpretation of macroeconomic needs drives aggregate asset prices. The Fed affects macroeconomic activity with a lag by altering aggregate asset prices. Its objective is to align future aggregate demand and supply (in expectation). We reverse engineer the aggregate asset price that implements the Fed's objective ("pystar") and derive several implications: (i) the Fed's beliefs about future macroeconomic needs (aggregate demand and supply) drive aggregate asset prices, while standard financial forces determine relative asset prices; (ii) more precise news about future aggregate demand makes output less volatile but increases asset price volatility; (iii) with aggregate demand inertia, the Fed overshoots asset prices in response to current output gaps; (iv) inflation is negatively correlated with aggregate asset prices, regardless of its source (aggregate demand or supply); and (v) belief disagreements between the central bank and the market generate a policy risk premium and potential "behind-the-curve" asset price dynamics.

Date: 2023-08
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Working Paper: A Monetary Policy Asset Pricing Model (2022)
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