Two workers fit a new valve on an oil pump (Photographer:Dmitry Beliakov/Bloomberg)

Oil ETF Investors Withdraw Most Money Since March: Chart

(Bloomberg) -- Even the longest rally in four years wasn’t enough to stop the withdrawal from the exchange-traded fund that tracks oil prices. The U.S. Oil Fund lost $299.1 million last week, the most since March. West Texas Intermediate crude entered a bull market on Thursday helped by the 16 percent jump in a seven-session advance.

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