This article does four things: it calls attention to an important phenomenon heretofore unmentioned in the literature, that is, the dividend spread; it presents open-interest and early-exercise d ata for in-the-money calls around ex dividend dates; it demonstrates that previous results concerning...

This paper examines the retail gasoline price fluctuations known as "gas wars." Weekly prices for the Los Angeles area were examined for the period from January 2, 1968 through December 23, 1975. The observed fluctuations were remarkably regular and, apparently, large ly predictable. The data...

L. Harris and E. Gurel (1986) and A. Shleifer (1986) examined changes in the Standard and Poor's list. Both studies presented evidence inconsistent with efficient markets. Looking at newer data and at bond and option prices, the authors find that case against market efficiency is not compelling....