A theory of the nominal character of stock securities

April 29, 2020
Issue 2020-03

Summary

We construct recursive solutions for, and study the properties of the dynamic equilibrium of an economy with three types of agents: (i) household/investors who supply labor with a finite elasticity, consume a large variety of goods that are not perfect substitutes and trade government bonds; (ii) firms that produce those varieties of goods, receive productivity shocks and set prices in a Calvo manner; (iii) a government that collects an exogenous fiscal surplus and acts mechanically, buying and selling bonds in accordance with a Taylor policy rule based on expected inflation. In this setting we show that stock market returns are much less than one-for-one related to inflation over a one-year holding period, which means that stock securities have a strong nominal character. We also show that their nominal character diminishes as the length of the stock-holding period increases, in accordance with empirical evidence.

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Issue:
03
Pages:
55
JEL classification:
E44, E52
Keywords:
Stock market, monetary policy, inflation-targeting
Year:
2020

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Author(s)

  • Bernard Dumas

  • Marcel R. Savioz

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