Among the stock activity stories for Thursday, June 13, from AP Business News:
— The Williams Companies Inc.'s shares fell after an explosion at one of its chemical plants started a fire.
— Shares of PVH Corp., the parent of Tommy Hilfiger and other clothing brands, rose after the company posted a smaller quarterly loss than Wall Street expected.
— Shares of Sigma Designs Inc. slid after the company, which designs semiconductor technology used in set-top boxes, connected TVs and media players and security systems, posted fiscal first-quarter results that appeared to disappoint investors. Its second-quarter revenue forecast indicated that growth may slow.