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Live fast, die young: equilibrium and survival in large economies

Beddock, Arthur; Jouini, Elyès (2021), Live fast, die young: equilibrium and survival in large economies, Economic Theory, 71, p. 961–996. 10.1007/s00199-020-01268-y

Type
Article accepté pour publication ou publié
Date
2021
Journal name
Economic Theory
Volume
71
Publisher
Springer
Pages
961–996
Publication identifier
10.1007/s00199-020-01268-y
Metadata
Show full item record
Author(s)
Beddock, Arthur
CEntre de REcherches en MAthématiques de la DEcision [CEREMADE]
Jouini, Elyès
CEntre de REcherches en MAthématiques de la DEcision [CEREMADE]
Abstract (EN)
We model a continuous-time economy with a continuum of investors who differ both in belief and time preference rate and analyze the impact of these heterogeneities on the behavior of financial markets. In particular, we allow the two types of heterogeneity to be correlated: a negative correlation means that the most optimistic agents are also the most patient ones. We fully characterize the risk-free rate which is procyclical and the market price of risk which is countercyclical. When the two types of heterogeneity are negatively correlated, the former is higher and the latter lower compared to the standard case. A negative correlation also leads to a higher market volatility. Moreover, we find that the trading volume increases with the variance of the belief heterogeneity distribution. Finally, the surviving agent of this economy is not necessarily the one who maximizes her utility over her lifetime: a shorter life might be more rewarding than a longer one.
Subjects / Keywords
Heterogeneous beliefs · Heterogeneous time preference rates · Continuum of agents · Asset pricing · Market elimination · Surviving agent
JEL
G11 - Portfolio Choice; Investment Decisions

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