Short sellers have been routinely blamed for triggering, or exacerbating, stock market declines. The experience of Taiwan provides an interesting case study of the impact of short selling bans on stock returns volatility in a time series framework due to the length of time the short selling ban...

Short sellers have been routinely blamed for triggering, or exacerbating, stock market declines. The experience of Taiwan provides an interesting case study of the impact of short selling bans on stock returns volatility in a time series framework due to the length of time the short selling ban...

The underlying shares of some American Depositary Receipts (ADRs) can be short sold in their home markets while others cannot. This institutional feature offers a unique opportunity to investigate the relation between short selling and price discovery. We hypothesize and confirm that ADR short...

We propose a theory of asset prices that emphasizes heterogeneous information as the main element determining prices of different securities. Our main analytical innovation is in formulating a model of noisy information aggregation through asset prices, which is parsimonious and tractable, yet...

This paper investigates market-level and private investor trading patterns and performance around earnings announcements. We document clear evidence for abnormal trading around earnings announcements for both the entire market and households in Germany and observe that private investor...

We examine the impact of stock exchange trading rules and surveillance on the frequency and severity of suspected insider trading cases in 22 stock exchanges around the world over the period January 2003 through June 2011. Using new indices for market manipulation, insider trading, and...

While previous studies find little evidence of an increase in the placement of new orders before a market sensitive announcement, existing limit orders are revised significantly more often. In this study, we extend the research in three ways. First, we extend the range of announcements studied....

This paper investigates whether markets for individual stocks lose liquidity when uninformed investors are given options to avoid trading against informed investors. I find a positive association between the percentage of firm shares being held by exchange-traded funds (ETFs) and illiquidity in...

The current research assesses the risks commonly attributed to the presence of HFT in the context of different market structures deployed by the U.S. exchanges. In particular, we find that, by design, the so-called “normal” exchanges have the lowest market quality, including the highest...