A big long article on one analyst's allegations of insider trading at Lehman. Definitely worth looking at, but at the end is the most damning note:
http://www.sfgate.com/cgi-bin/articl...#ixzz1w78REMHB
http://www.sfgate.com/cgi-bin/articl...#ixzz1w78REMHB
Indeed, the SEC filed roughly 60 insider-trading cases in its 2011 fiscal year alone. But aside from a few that sprang from the Rajaratnam case and a handful of other sizable cases, many involved minor players and small sums. Of the 93 people charged during that period, 37 had pocketed less than $100,000 on their inside trades, according to the SEC; 19 made $50,000 or less; and one netted just $8,391.