Polypore Down 6% on Rumor It May Lose Big Auto Business (PPO)

A rumor is developing that technology filtration company, Polypore International Inc. (NYSE: PPO ) has lost business because Asian competitors are severely undercutting PPO’s price. Polypore provides lithium ion (Li-Ion) battery separators to LG Chem for use in General Motors’ (NYSE: GM ) Chevy Volt and to Nissan Motor