GameStop Corp. (GME) has entered its first confirmed monthly uptrend since 2021, with shares trading at $37.29 in pre-market on May 28, up $2.28 or 6.51%. The stock is currently the top trending ticker at the market open, with sentiment reaching a weekly high. GME is experiencing increased volume, and technical analysts have identified a key level at $34.37, with limited resistance until $39.80. The stock is also noted to be filling a gap from May 23. Other meme stocks, including AMC Entertainment Holdings Inc. (up 23%) and BlackBerry Ltd. (up 10%), are also posting significant gains. The moves are occurring amid low float and high short interest, with volatility picking up across these names. Activity on r/WallStreetBets and similar forums is contributing to the momentum in GME and related stocks.