Why Applied Optoelectronics Stock Just Jumped 7%

Applied Optoelectronics (AAOI 6.48%) stock jumped double digits in early trading on the Nasdaq Stock Market Tuesday, before retracing to about a 7.4% gain through 12:12 p.m. ET.If you own shares of the fiber optics networking equipment maker, you can thank Rosenblatt Securities for the gains. This morning, Rosenblatt upgraded Applied Opto stock to "buy."What Rosenblatt said about Applied OptoelectronicsWith a history of losing money in its telecom equipment business, a negative trailing P/E ratio, and a for ...