Using proprietary data on equity lending supply, loan fees and quantities, we examine the link between institutional ownership structure and the market for equity lending and stock prices. We find that both total institutional ownership and ownership concentration (measured by the Herfindahl...

We investigate whether short sellers are subject to the disposition effect using a novel dataset that allows to identify the weekly closing of short positions. Consistent with the disposition effect, the closing of short sale positions is strongly related to a proxy of Shortsale Capital Gains...

Recent research finds that investors, broadly defined, react to the linguistic tone of quarterly earnings conference calls; there is a positive relation between firms' stock returns and call tone (a measure of “sentiment” related word tabulations). However, this type of soft information can...

Contrary to the hypothesis that informed short sellers increase their positions prior to earnings announcements, we find that short activity declines in the pre-announcement period compared with activity in non-announcement time. This statistically significant, but economically modest, decline...

Contrary to existing event studies around option listing introductions, we show short selling and options trading are complements, rather than substitutes. Further, while a plethora of literature demonstrates both short sellers and option traders are informed traders, relatively little is known...

This article analyzes the manifold situations in which the efficient-market hypothesis (EMH) has influenced—or has failed to influence—federal securities regulation and state corporate law, and the prospective roles for the EMH in these contexts. In federal securities regulation, the EMH has...

Ever since the Creation of the stock exchange, scientists have tried to endow them with a theoretical representation. Mathematicians endeavoured to demonstrate that the Gaussian character of financial markets should by necessity neutralise any speculative temptation. Astrophysicists went further...

We propose a new structural form methodology for understanding the fluctuations and predictability of volatilities and covariances of asset returns. In our model, a representative agent learns about the joint movements in inflation and real earnings through business cycles. We extract investors'...

In this study we examine a causal relationship between series of returns and traded volumes in high-frequency data. Our analysis is based on the methodology of Ghysels, Gourieroux and Jasiak (2000), who develop a qualitative framework in which dynamics of financial series are restricted to...

Capitalisation weighting has added 8,000 basis points of incremental returns to the FTSE 100 Index compared to an equally weighted portfolio of the same constituents. Industry factors explained 66% of the incremental returns, while size and style factors explained 2%. The capitalisation weighted...