This paper examines how the extent of short-term trading relates to the efficiency of stock prices. We employ a new duration measure based on quarterly institutional investors' portfolio holdings, next to existing proxies such as trading volume, the percentage of transient institutions, and fund...

This study tests speculative bubble theory, which assumes investors' heterogeneous beliefs and short-sale constraints, as a potential explanation for the long-run underperformance of initial public offerings (IPOs). The prediction of speculative bubble theory is difficult to test directly...

This paper takes the first opportunity to study the impact of the recent financial crisis on the stock price performance of initial public offerings (IPOs) in the short and long run. We conduct an analysis of 588 firms newly listed on the U.S. stock markets over the period 2003- 2010. We find...

In this paper we propose a new cross-sectional asset pricing model employing a Young-minus-Old (OMY) factor, which accounts for long-run post-IPO underperformance. The OMY factor might be also seen as a measure of market sentiment. We test the model using stock returns from the Warsaw Stock...

Before shares of a company are sold to the general public on a security exchange for the first time, regulatory publication requirements force U.S. firms to file an initial public offering prospectus. While accounting information in IPO filings are closely studied by investors and analysts,...

We propose a simple measure of investor sophistication based on financial statement experience derived from publicly available EDGAR log data about accounting information acquisition activity. This approach allows us to provide unique empirical evidence for the existence of attention induced...

We examine the post-IPO excess stock returns of hospitality firms from 1996 to 2012 and find underperformance relative to the market on average. However, there are large differences in returns and some firms significantly outperform. We demonstrate that a substantial portion of this variation...

We find significant impact of insider trading activity on the long-run performance of IPOs. We show that, at the aggregate, insiders are net sellers in IPOs that generate positive long-run returns, while they are net buyers in those that underperform. When we analyse individual trades, we find...

Hard-to-value stocks provide opportunities for managers to exploit their informational advantage through trading on their firms' and their own personal accounts. In contrast to the prediction that such transactions reflect private information about future events, they are contrarian and heavily...

This paper examines short sales transaction volumes on the first trading day of 610 initial public offerings (IPOs) from 2011 to 2015. The tests provide evidence of informed trading immediately at the IPO. Results reveal that short selling volume on the first trading day of the IPO is...