Quercus Trust, Former 10% Owner at Emcore, holds 5.68M shares in Emcore (Ticker: EMKR), holds 2.69M shares in Energy Focus (Ticker: EFOI), holds 1.12M shares in Axion Power International (Ticker: AXPWQ). Most recently, Quercus Trust ― shares of Emcore on ― for an estimated value of ―.