| Power-One (PWER) shares jumped 25%. The company swung to a second-quarter profit of 17 cents a share from a loss of 8 cents in the year-earlier period. Sales at the Camarillo, Calif., provider of energy-efficient power-conversion and power-management solutions more than doubled to $214.5 million. Analysts polled by FactSet had expected profit of 9 cents a share on revenue of $185.8 million.
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