We provide a new test of the informational efficiency of trading in stock options in the context of stock split announcements. These announcements tend to be associated with positive abnormal returns. Our traditional event study results show abnormal returns that are significantly lower for...

Purpose – Prior research on additions to the S & P 500 and the smaller MidCap 400 and SmallCap 600 indexes reach different conclusions regarding the key variables that explain the cross-section of announcement period abnormal returns. Most notable in this regard is that liquidity measures,...

The purpose of this article is to formulate and test a decision model to increase the return on a pool of liquid assets through the use of Treasury bill futures contracts. Recent literature has documented inefficiencies in the pricing of T-bill futures. These inefficiencies can be exploited to...

Publicly-traded commodity funds have been poor investment vehicles, yet new funds are a fast-growing part of the investment scene. In this article, the authors show that the information provided to investors is significantly biased upward and that true performance cannot be determined by the...