An increase in the cost of short selling should increase the bearish information content of short interest announcements by driving relatively uninformed short sellers out of the market (Diamond and Verrecchia, 1987). We extend the Diamond and Verrecchia model to include short selling against...

This study investigates the relationship between the dispersion of analysts? earnings forecasts and stock price variability around quarterly earnings announcements. Consistent with theoretical predictions, the empirical analysis shows that stock price variability at the time of earnings...

This paper provides an empirical study of the effect of a transaction tax on share prices, using changes in the rate of stamp duty in the UK as quasi-experiments. Because the impact of a stamp duty is expected to depend on how frequently particular shares are traded, we employ a...

The exercise of a warrant leads to the well-known dilution phenomenon, whose effects have been extensively studied over the last four decades. In contrast, the existing literature has paid inadequate attention to the volatility spillover between stockholders and warrant holders. This...

We investigate the dynamics of the displayed part of the Island ECN limit order book for the equity index-linked securities market around macroeconomic news releases. Our results indicate that the quality of the electronic market, measured by spread and depth, deteriorates during the releases....

This study examines whether differential interpretation of earnings announcements is affected by earnings and firm characteristics. We find that Kandel and Pearson's (1995) forecast measures of differential interpretation are: 1) negatively related to earnings predictability, firm size, and...

Rational herd behavior and informationally efficient security prices have long been considered to be mutually exclusive but for exceptional cases. In this paper we describe the conditions on the underlying information structure that are necessary and sufficient for informational herding and...

One of the central hypotheses of behavioural finance is that stock prices systematically overreact. The seminal study is DeBondt and Thaler (1985), which appears to show that past winners (stocks that have earned the highest positive abnormal returns during the pre-formation period) tend to...

This paper investigates informed trading on stock volatility in the option market. Using a unique data set from the Chicago Board Options Exchange, we construct non-market maker net demand for stock volatility from the trading volume of individual equity options. We find that this volatility...

We present a simple, Glosten-Milgrom type equilibrium model to analyze the decision of informed traders on whether to use limit or market orders. We show that even after incorporating an order's price impact, not only may informed traders prefer to use limit orders, but the probability that they...