By Saqib Iqbal Ahmed NEW YORK (Reuters) - Options activity in BlackBerry Ltd jumped after a Reuters report that Samsung Electronics Co Ltd had approached the Canadian company about a possible takeover deal. Call volume on BlackBerry options swelled to about four times normal after the report that Samsung had approached BlackBerry about buying the company for as much as $7.5 billion. The value of BlackBerry calls, which allow the purchase of shares at a specified price in the future, soared, in some cases by several thousand percent. U.S.-listed shares rose 29.7 percent to close at $12. ...

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