EGARCH-M models based on a daily, weekly, and monthly S&P–500 returns over the period October 1934–September 1994 reveal that higher margins have a much stronger negative relation to subsequent volatility in bull markets than in bear markets. Higher margins are also negatively related to...

Débat du pouvoir et des finalités des marchés financiers et plaide pour une réhabilitation de la politique qui peut constituer un contrepoids.

L'auteur tente de montrer que les menaces réelles liées à la mondialisation peuvent être évitées si la politique économique reconnaît dans le social une composante essentielle de l'efficacité économique.

Pour faire en sorte que le progrès social ne reste pas en panne, la politique doit imposer sa loi aux marchés financiers même si ceux-ci sont indispensables au fonctionnement de l'économie française en aidant à répartir la masse des risques. L'échec de la gauche en France s'explique...

Futures exchanges raise margins in environments characterized by recent substantial increases in futures price volatility, and they raise margins in contracts that have recently shown the largest volatility increase. Volatility then tends to fall. This reduction is smaller - especially the...

We propose a new method to model hedge fund risk exposures using relatively high frequency conditioning variables. In a large sample of funds, we find substantial evidence that hedge fund risk exposures vary across and within months, and that capturing within-month variation is more important...

We propose a new method to capture changes in hedge funds' exposures to risk factors, exploiting information from relatively high frequency conditioning variables. Using a consolidated database of nearly 15,000 individual hedge funds between 1994 and 2009, we find substantial evidence that hedge...

The prices of Greek closed-end funds behave similarly to the prices of US funds: they deviate substantially from their net asset values (NAVs); they are more volatile than their NAVs; and they are overly-sensitive to the movements of the domestic stock market index. Furthermore, their premia...

This paper provides empirical evidence of the impact of hedge funds on asset markets. We construct a simple measure of the aggregate illiquidity of hedge fund portfolios, and show that it has strong in- and out-of-sample forecasting power for 72 portfolios of international equities, corporate...

We analyze the reliability of voluntary disclosures of financial information, focusing on widely-employed publicly available hedge fund databases. Tracking changes to statements of historical performance recorded at different points in time between 2007 and 2011, we find that historical returns...