Financial markets are typically characterized by high (low) price level and low (high) volatility during boom (bust) periods, suggesting that price and volatility tend to move together with different market conditions/states. By proposing a simple heterogeneous agent model of fundamentalists and...

Heterogeneity and evolutionary behaviour of investors are two of the most important characteristics of financial markets. This papers incorporates the adaptive behavior of agents with heterogeneous beliefs and establishes an evolutionary capital asset pricing model (ECAPM) within the...

When agents agree to disagree about the expected growth rate of the aggregate endowment process, we study the asset price dynamics under “Keeping up with the Joneses” (KUJ) meaning that each agent maximizes the expected life-time CRRA utility of his relative consumption to the other agent in...

By testing a simple asset pricing model of heterogeneous agents to characterize the power-law behavior of the DAX 30 from 1975 to 2007, we provide supporting evidence on empirical findings that investors and fund managers use combinations of fixed and switching strategies based on fundamental...

Social interaction contributes to stochastic volatility and momentum in financial markets. By developing a simple evolutionary model of asset pricing and population game, we incorporate social interaction among investors with information uncertainty and show that social interaction leads to the...

Within the framework of the heterogeneous agent paradigm, we establish a stochastic model of speculative price dynamics involving of two types of agents, fundamentalists and chartists, and the market price equilibria of which can be characterised by the invariant measures of a random dynamical...

Within the standard mean-variance framework, this paper provides a procedure to aggregate the heterogeneous beliefs in not only risk preferences and expected payoffs but also variances/covariances into a market consensus belief. Consequently, an asset equilibrium price under heterogeneous...

This paper extends the standard Black's zero-beta CAPM with homogeneous beliefs to the case with heterogeneous beliefs in terms of risk aversion coefficients, expected payoffs, and variance/covariance matrices of the payoffs of risky assets among heterogeneous agents within the mean-variance...

Following the framework of a one risky - one riskless asset model developed by Brock and Hommes (1998), this paper considers a discrete-time model of a financial market where heterogeneous groups of agents allocate their wealth amongst multiple risky assets and a riskless asset. Agents follow...

In this paper we investigate the dynamics of the traditional cobweb model where producres are risk averse and seek to learn the distribution of asset prices. We consider the subjective estimates of the statistical distribution of the market prices based on L-step backward time series of market...