First Trust Advisors LP lessened its stake in shares of Power Integrations, Inc. (NASDAQ:POWI – Get Rating) by 1.6% in the fourth quarter, HoldingsChannel.com reports. The institutional investor owned 479,913 shares of the semiconductor company’s stock after selling 7,750 shares during the quarter. First Trust Advisors LP’s holdings in Power Integrations were worth $34,421,000 as […]