HNP Crosses Critical Technical Indicator By: Energy Stock Channel April 27, 2016 at 11:28 AM EDT In trading on Wednesday, shares of Huaneng Power International, Inc. (HNP) entered into oversold territory, changing hands as low as $29.62 per share.. Read More >> Related Stocks: Emrg Mkts Infrastructure Ishares ETF Huaneng Power Intl ADR