French Abstract: Nicolas Firzli nous fait partager certains des travaux menés par le World Pensions Council (WPC) et résume ici une partie des interventions du G7 Pensions qui s'est tenu fin août dernier, en marge du Sommet du G7 de Biarritz. Il livre des pistes de réflexions précieuses...

This paper studies the role of fluctuations in the aggregate price-earning ratio at different time-scales, for predicting stock returns and exploring the channels through which returns are forecasted. Using U.S. quartely data, we find that cycles in the price-earning ratio are strong and better...

We compare the optimal trading strategy of an informed speculator when he can trade ahead of incoming news (is "fast"), versus when he cannot (is "slow"). We find that speed matters: the fast speculator's trades account for a larger fraction of trading volume, and are more correlated with...