This new ETF will Dent and scratch your portfolio

MarketWatch Stupid Investment of the Week show

Summary: AdviserShares has given market prognosticator Harry S. Dent a new crack at running a fund. But with Dent's spotty track record for getting things right -- and his lousy record running a past mutual fund -- MarketWatch senior Columnist Chuck Jaffe wonders why anyone would take a chance on the fund.