We test the NBA betting market for efficiency and find that totals lines are significantly biased early each season, yet sides lines do not show a similar bias. While market participants generally force line movements in the correct direction from open to close, they do not fully remove the...

From 2000 to 2008, Tradesports operated an online betting site where gamblers used real money to wager on the outcomes of various sporting events. A critical difference between Tradesports and traditional casino-type venues is that participants were allowed to place wagers after underlying...

This study examines the pre-game and within-game price movements of contracts listed on Tradesports to determine whether relevant information is quickly and accurately embedded into asset prices. Each contract represents a totals (over/under) bet on an NFL game. In traditional casino-style...

I examine outcome predictability in the National Football League totals betting market using data from the 1984 through 2004 seasons. Results suggest that while weather is an important determinant of scoring, the market does not accurately incorporate the effects of adverse conditions into...