GameStop shares climb back above $100 but Reddit investors still out billions

GameStop's stock price gyrated on Wednesday, climbing back above $100. That was after starting the day with a dip, that left the shares, which had been the hottest stock on Wall Street last week, well below they're week-ago highs. The dip suggests that the popular WallStreetBets Reddit stock market discussion board that has helped drive the run-up may be losing its magic to move the market.

The GameStop tumble followed a large reduction in short interest on the stock, which measures how many of the company's shares have been borrowed...