A dynamic market for a risky asset with a continuum of risk averse heterogeneously informed investors and a risk neutral competitive market sector is examined. The market is (semi-strong) informationally efficient due to competitive market making activity. The paper analyzes the effect of...

This paper studies a dynamic model of an imperfectly competitive bid- ask market with a few large and many small traders. Large traders are risk- averse and exchange a risky asset for hedging purposes. The only private information in the model concerns their hedging demands. We find that large...

The paper proposes a new multivariate model for exchange rate volatility in a system of bilateral exchange rates, using a factor structure of exchange rates one of the common factors is always related to the numeraire currency. Time variation in the volatility is modelled using a stochastic...

Suppose that information about the value of a risky asset is dispersed among many agents in the economy. The paper studies the rate at which successive price quotations from competitive market makers, which reflect the desired (notional) trades of risk- averse informed agents, reveal the value...