In the old days, Wall Street's top hedge fund managers used to operate secretly and silently behind the scenes. Not anymore.
These days, one popular hedge-fund strategy is to take a position and then publicly announce it--while also often explaining your investment thesis in detail. The goal in doing so is presumably to persuade others to make similar bets, thus driving the stock in the desired direction.
Of course, one drawback in revealing your position is that you invite others to take the opposite side of the trade. And in one very public case--opposing bets on a stock called Herbalife--that's exactly what's happening….