Shares of semiconductor and chip companies are trading lower, led by declines in Micron and other memory-chip stocks, following a report that Chinese rival ChangXin Memory Technologies has made key progress in developing a new DRAM cell structure designed to increase storage density and improve efficiency. The advancement draws attention to intensifying competition in the broader chip market, potentially pressuring established manufacturers' market share and pricing power.

Shares of semiconductor and chip companies are trading lower, led by declines in Micron and other memory-chip stocks, following a report that Chinese rival ChangXin Memory Technologies has made key progress in developing a new DRAM cell structure designed to increase storage density and improve efficiency. The advancement draws attention to intensifying competition in the broader chip market, potentially pressuring established manufacturers' market share and pricing power.