In this paper we examine the price movements of contracts that represent bets on NBA games and find that the disposition effect causes significant deviations between contract prices and values. The contracts under examination are listed on Tradesports, a prediction market which provides an ideal...

We examine the value of expert picks published by SmartMoney, a popular investment periodical. Most can be described as ‘hot' stocks – those that have experienced run-ups in price prior to publication. These stocks subsequently underperform the market by 0.45% per month in the six-month...

In this paper we explore the profit-taking tactics employed by informed traders when there are informational asymmetries across investors. Our laboratory is Tradesports, which until 2015 operated a double auction exchange where participants traded binary options contracts. This venue is a close...

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...