Other retail darlings GameStop GME.N and AMC Entertainment AMC.N added 10.8% and 8.3%, respectively, while Koss Corp KOSS.O and BlackBerry BB.N were up 4.6% and 4.3%, respectively. The home products maker was tethered to the meme stocks phenomenon this year, where individual investors coordinated in online message boards like Reddit and Stocktwits to fuel eye-popping rallies in certain shares, costing short sellers billions of dollars. Analysts at BofA Securities said while Bed Bath & Beyond's announcements were enough to squeeze short sellers, the company still faces risks in the coming months, including cost inflation pinching its margins.