存储芯片股周一盘前技术性反弹，长鑫存储业绩暴增却在沪市跌7.77%，市场聚焦AI存储周期见顶担忧

Micron ( MU ) and SanDisk ( SNDK ) shares rose about 4% in premarket trading Monday after last week's selloff, while Chinese memory chipmaker ChangXin Memory Technologies, which reported a swing to a huge profit, saw its shares fall 7.77% in Shanghai. SK Hynix ( SKHY ) shares were up 5%; Western Digital ( WDC ) and Seagate ( STX ) were both up more than 3%. CXMT reported "key progress" last week on a new cell architecture to boost memory density triggered a rout in memory stocks last week, with Micron losing 11% and SanDisk shedding about 13% over the period. In a preliminary earnings estimate for the first nine months of 2026, CXMT said it expected operating revenue of about Rmb265B ($39.60B) to Rmb270B($40.35B), up from Rmb32.084B in the same period last year. It forecast net profit attributable to shareholders of Rmb131B( $19.58B) to Rmb132.5B, against a loss of Rmb5.28B a year earlier. The company attributed the turnaround mainly to industry conditions. Since the second half of 2025, it said, demand for AI computing power had grown rapidly, driving a surge in the global DRAM industry. Products had been in short supply, and prices had “risen substantially”, it said, according to a Google translation. A swing of that scale would ordinarily cause shares to rise. The selloff suggests that for now the market is more preoccupied with where the AI-driven memory boom goes next than with how much it has already delivered. On Thursday, AI stocks fell across global markets as rising borrowing costs stoked concerns that AI infrastructure spending could slow, pressuring companies that have benefited from the investment boom.