Like I said, the shorting compounded the price spike: Henderson theorizes that hedge funds purchases a bundle of shares that would have otherwise been lent out freely to short sellers and bought them back from the short sellers. This created fewer shares for short sellers to borrow in the market and that squeezed the number of possible shares available to be lent out, making it harder for short sellers to bet against the stock. The desperate short sellers needed to find new shares to borrow but supply got constricted. “All of that price inflation was likely driven by vindictive hedge funds trying to squeeze out a hedge fund that was short GameStop,” said Henderson.