Cryptocurrency trading hamster 'Mr. Goxx', whose performance beat US' S&P 500's returns of 10.9%, has passed away. "In deep sorrow, we have to announce the loss of our beloved furry friend," his German owners tweeted. In Twitch livestreams, Mr. Goxx ran through a 'buy' or a 'sell' tunnel inside his office to select which cryptocurrency he'd like to trade.