Gravel
Mr. Poopybutthole
Not sure if it's from that study, but someone looked at mutual fund managers and found that their performance was somehow worse than would be expected by probability (i.e. you'd at least expect them to meet an average return, but they actually did worse than what would be expected across the board).Daniel Kahneman (Nobel prize in Econ) studied somewhere about 50 years of trade data for Wallstreet traders. His research showed on average traders were actually marginally worse than a coin flip. Choosing random letters sound about as good a strategy as flipping a coin.
In fact, just about the only way mutual funds can look successful is because they drop underperforming funds all the time. So it's a constant rotation to give the illusion of returns.