Bearish ETF drinks up bad news

The strategy of the AdvisorShares Active Bear ETF is so uncommon that Morningstar believes it is the world's only actively-managed, short-only ETF

When Green Mountain Coffee Roasters stock price fell sharply last month, well-known hedge-fund manager David Einhorn wasn't the only winner.

John DelVecchio had a big bearish position on the coffee maker, handing his small fund a windfall as the stock tumbled 48% amid disappointing earnings. He had been ready for that moment for more than a year.

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