Criticizing the Efficient Market Hypothesis (EMH) on the basis of highly volatile asset prices is conceptually wrong as efficiency is about rationality and information, not about stability. Speculative bubbles are compatible with rational valuation, and hence with market efficiency. As rational...

A popular interpretation of the Rational Expectations/Efficient Markets hypothesis states that, if it holds, market valuations must follow a random walk; hence, the hypothesis is frequently criticized on the basis of empirical evidence against such a prediction. Yet this reasoning incurs what we...

A popular interpretation of the Rational Expectations/Efficient Markets hypothesis states that, if the hypothesis holds, then market valuations must follow a random walk. This postulate has frequently been criticized on the basis of empirical evidence. Yet the assertion itself incurs what we...

This paper analyzes the choice between limit and market orders in an imperfectly competitive noisy rational expectations economy. There is a unique insider, who takes into account the effect their trading has on prices. If the insider behaves as a price taker, she will choose market orders if...

L’évaluation du prix des actifs est un problème récurrent en économie. Cette question se pose dans le domaine de l’immobilier comme dans d’autres domaines. Après une très forte phase de croissance, le marché immobilier américain a été touché à partir du mois de juin 2007 par...

This paper presents direct evidence for self-enforcing dynamic contracts in sovereign bank lending. Unlike the existing empirical literature, its instrumental variables method allows for distinguishing a direct influence of past repayment problems on current spreads (a "punishment" effect in...

We consider a noisy rational expectations equilibrium in a multi-asset economy populated by informed and uninformed investors, and noise traders. Informed investors privately observe an aggregate risk factor affecting the probabilities of different states of the economy. Uninformed investors...