Stocks fell for a fourth consecutive trading day on Tuesday, closing down a quarter of a percent. The index has pulled back 3.2% since reaching a nine-year high two weeks ago. PLX (-6.7%) tumbled on its third day of trading after announcing preliminary Q1 PBT dropped 13% YoY, though adjusted for a non-recurring item, it was flat. The company also said 20 million treasury shares will be sold via order matching method. DXG (+3.2%) jumped on news the firm's chairman registered to buy