'Not having won' does not mean that it isn't done, by a long way. It can mean that it is hard to pin on the offenders, that they are people who can bury their tracks and hire the right defence if suspected. Remember they could not nail the short sellers just before 9/11.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.