Valmark Advisers Inc. raised its stake in Powell Industries, Inc. (NASDAQ:POWL – Free Report) by 82.2% during the 4th quarter, Holdings Channel.com reports. The firm owned 8,552 shares of the industrial products company’s stock after buying an additional 3,857 shares during the quarter. Valmark Advisers Inc.’s holdings in Powell Industries were worth $756,000 as of […]