Profs Menachem Brenner and Marti Subrahmanyam's joint research on insider trading is cited
— July 17, 2014
Excerpt from Business News Network -- "It's actually very difficult to really say whether insider trading occurs or not... We got inspired by a series of insider trading cases that were discussed in the financial press. We just thought we should go out there and do a systematic study on this in the context of M&A activity and in the options market. Now, within that market, what we see is that there is unusual activity in the options market going on ahead of these announcements, but that only suggests that there is a lot of informed trading. So it's very difficult to say whether that is insider trading or not."