Were the September 11 hijackers insider traders as well as murderers? The 9/11 Commission's report has belatedly put paid to the rumor that Osama bin Laden and his accomplices speculated in the stocks and options of vulnerable companies in the weeks before the attacks. The potential profits garnered from such manipulation would have been in the millions. Truth to tell, if one looked at the trading figures — especially with the benefit of hindsight — for early September, there was a lot to be suspicious about. Trading in AMR — the ticker for American Airlines' parent — rang alarm bells,...