This paper tackles the "aggregation problem" for stochastic economies with possibly incomplete market. An "aggregation theorem" is proved towards an analytic construction of the representative agent’s utility function. This is done within a general time-state setup with general utility...

This paper establishes conditions under which the classical CAPM holds in equilibrium. Our derivation uses simple arguments to clarify and extend results available in the literature. We show that if agents are risk averse in the sense of mean-preserving-spread (MPS) the CAPM will necessarily...

We derive a general equilibrium linear relationship between the market prices of risks and market risk aversion under a continuous time stochastic volatility model completed by liquidly traded options. The relation is robust as it is valid for both endowment and production economies, and for...

Markowitz (1952) portfolio selection requires estimates of (i) the vector of expected returns and (ii) the covariance matrix of returns. Many proposals to address the first question exist already. This paper addresses the second question. We promote a new nonlinear shrinkage estimator of the...

The economy of the European Union has not recovered from the impact of the economic and financial crisis. Growth rates remain low and investment activity is weak. This questions current economic policies of the Economic and Monetary Union, known as austerity. In opposition to fiscal contraction...

In this paper we present a theory of the financing of investment in a modern capitalist economy, following the approach developed by Hyman P. Minsky. We argue that the current financial crisis that began with the collapse of the subprime mortgage market in the United States in 2007 provides a...

In the post-crisis period, increased regulation of financial intermediaries led to a significant decline in corporate bond market liquidity. In order to stabilize these markets, policy makers recently proposed that the trading of corporate bonds should be more centralized. In this paper, we show...

We develop a dynamic general equilibrium model to analyze the effects of central bank purchases of government bonds by investigating the following three questions: Under what conditions are these purchases socially desirable, what incentive problems do they mitigate, and how large are these...

We show that including distribution costs into a general equilibrium model of international portfolio choice contributes to explaining the "home bias" in international equity investment. Our model is able to replicate observed investment positions for a wide range of parameter values, even if...