Short-selling research firm Hindenburg Research issued short report on its site about Genius Brands, which was the focus of fellow short-seller Citron Research yesterday. In the new report, Hindenburg argues that “retail investors seem entirely unaware that ~131 million shares and share equivalents issued from recent financing rounds will become available to trade within an estimated 2-4 weeks.” The firm believes that an “upcoming wall of selling pressure could send the high-flying shares back to $1.50 within a month.”