GME gamestop has been getting pump for a long time now. Individual investors — particularly on the Reddit chat forum “WallStreetBets” — began buying GameStop shares and encouraging others to do so. GameStop's shares are now up nearly 1,700% so far in 2021 -- and it's still January. An epic short squeeze is believed to be fueling the rally -- one led by an army of individual traders that are using social media sites like Reddit and Twitter to coordinate their strikes against short-sellers.
By buying heavily shorted stocks en masse, these bear slayers are driving up their price. Short-sellers, in turn, are suffering staggering losses. To stem the bleeding, many short-sellers including multibillion-dollar hedge fund Melvin Capital have been forced to exit their positions. This requires that they buy back the stock they sold short, which has likely helped to drive GameStop's price even higher.