This paper investigates insider trading before scheduled versus unscheduled corporate announcements to explore how corporate insiders utilize their private information when the amount of liquidity trading is varying over time in a predictable way. Using a comprehensive insider trading database...

This paper examines the profitability of option-based merger arbitrage. A simple arbitrage strategy using stock options is designed to examine the merger arbitrage profitability from 1996 to 2008. This strategy takes long position on call options of target firms and put options of acquirer firms...

Using a broad sample of merger announcements, I find unusual option volume right before these announcements, an abnormality which provides new information about the pre-merger stock price runup beyond what is incorporated in the stock market. I also find that there exists abnormal option pricing...

Using a broad sample of merger announcements, I find unusual option volume right before these announcements. The abnormal option volume provides new information about the pre-merger stock price runup beyond what is incorporated in the stock market. I also find that there exists abnormal option...