Nokia Oyj, the world’s biggest maker of mobile phones, tumbled the most in almost 19 months on investor concern that a partnership with Microsoft Corp. won’t be enough in its battle with Google Inc. and Apple Inc.
Nokia, led by Chief Executive Officer Stephen Elop, unveiled plans today to make Microsoft’s Windows its primary software in the competition for smartphone customers against Apple’s iOS and Google’s Android platforms. Nokia’s shares fell 14 percent, the steepest slide since July 16, 2009.
