Update (11:30 a.m. ET): After dropping earlier, GameStop and other heavily shorted stocks are rising after trading app Robinhood lifted some trading restrictions. Reports say clients can now purchase up to 100 shares of GameStop and raised limits on AMC, Express, BlackBerry, and others. – GameStop (GME) dropped more than 50 percent on Tuesday morning, as many Reddit WallStreetBets users continue to urge others to buy and hold the stock. As of 11:30 a.m. ET, the stock was appearing to make a rally and was down 39 percent. It came as billionaire Dallas Mavericks owner Mark Cuban held a question-and-answer forum on the popular sub-Reddit, urging the users to buy and hold no matter what. “No disruption is easy or happens in a straight line. Stay with it. I am a believer,” he wrote. “Thanks for changing the game. Thanks for taking on Wall Street. Thanks for making kids around the …