The storage sector experienced a concentrated sell-off on Monday, with Micron closing down 3.88% and SanDisk falling 5.97%. Micron is now down nearly 20% from its June high. This correction was primarily driven by a triple whammy: the South Korean market saw a catch-up decline after the Hangeul Day holiday, with the KOSPI index plummeting 3.65%; Samsung and SK Hynix's combined share repurchase plans, totaling approximately $40 billion, concluded earlier than expected, with Samsung's buyback ending on October 6; and China's ChangXin Memory Technologies (CXMT) announced on October 9-10 that it had made key progress with its 4F² next-generation DRAM architecture and plans to launch server memory products by year-end, potentially putting it about two years ahead of the two South Korean giants in terms of cell architecture. Goldman Sachs analysis indicates that despite strong recent fundamentals, the market is already pricing in the risk of a supply-demand reversal in 2027-2028, potentially driven by China's capacity expansion and the commissioning of new South Korean fabs.