Shares of Axiall (AXLL -16.2%) plummet after earnings miss estimates by a wide margin. The acquisition of PPG's chlorine assets was largely responsible for an $88.6M increase in adjusted EBITDA from Q1 2012 in the Chlorovinyls segment (which accounts for most of the firm's sales), but relatively high ethylene costs and lower resin sales prices conspired to offset the gains. Meanwhile, net sales decreased in both the Building Products and Aromatics segments. (PR)