Memory chip stocks are experiencing a significant downturn, reversing recent strong gains. The sell-off appears to be triggered by a report speculating that Apple, a major customer, is exploring memory compression technology to reduce its reliance on DRAM and NAND for future devices. This news introduces uncertainty into the prevailing narrative of a prolonged memory supercycle driven by AI demand, prompting investors to take profits in a sector that has seen substantial year-to-date appreciation. The move also comes ahead of key earnings reports from the semiconductor industry.