Andadolu Agency/Getty Images Reddit day traders tried to beat Wall Street at its own game to prove the system is rigged. Instead, brokerages locked them out and their holdings tanked, while some hedge funds still won big. Experts said Wall Street's reaction showed just how high the deck was stacked against small investors. Keith Gill, the day-trading member of the Reddit group Wall Street Bets who is widely credited with igniting the recent GameStop trading frenzy, claimed in late January that he had turned his $54,000 investment into a $48 million fortune. Days later, it had been sliced by more than half to $22 million, and regulators had set their sights on Gill, investigating him over potential disclosure violations.