Huaneng Power International Stock Getting Very Oversold By: Energy Stock Channel January 04, 2016 at 11:30 AM EST In trading on Monday, shares of Huaneng Power International, Inc. (HNP) entered into oversold territory, changing hands as low as $32.20 per share.. Read More >> Related Stocks: Emrg Mkts Infrastructure Ishares ETF Huaneng Power Intl ADR