Memory stocks, including those of Samsung, SK Hynix, and Micron, are falling, with some outlets citing a weak outlook from SK Hynix and others mentioning a large investment plan by Samsung and SK Hynix. The amount of the investment plan is reported differently, with some outlets stating $1.3 trillion and another stating $590 billion. The decline in memory stocks is also attributed to various other factors, including supply tightness and a selloff triggered by Samsung.