Kovack Advisors Inc. lifted its stake in shares of Walmart Inc. (NYSE:WMT – Free Report) by 0.9% in the 2nd quarter, HoldingsChannel reports. The firm owned 14,818 shares of the retailer’s stock after buying an additional 137 shares during the quarter. Kovack Advisors Inc.’s holdings in Walmart were worth $2,329,000 as of its most recent […]