Carl Icahn, the shareholder activist who has raised hell on boards including Yahoo (NSDQ: YHOO) and Lions Gate Entertainment, has increased his stake in Motorola (NYSE: MOT) to 8.75 percent.
The Wall Street Journal reports that his interest is likely a sign of confidence in the mobile phone and wireless infrastructure provider. The company’s stock has gained ground since announcing that it will break into two publicly held companies early next year. Through various funds, Icahn has upped his stake to 203.3 million shares from 119.8 million shares at the end of 2009.
Over the past few years, Icahn has called Motorola

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