Samsung, SK Hynix, and Micron are being sued in the US for alleged memory price fixing, with plaintiffs claiming the companies colluded to reduce supply and drive up prices by 700% over four years. The lawsuit alleges that the companies used the transition to high-bandwidth memory as a pretext to limit supply. The case is currently small in scale, but could expand if the court approves it as a class action. The companies have previously been found guilty of price fixing in the US, resulting in large fines and prison sentences for executives.