AI存算分离突破催化DRAM需求，数字经济ETF(560800)盘中涨1.27%

Group 1 - The semiconductor and chip sectors are experiencing a strong rally, with the China Securities Digital Economy Theme Index rising by 1.23% as of January 28, 2026, and key stocks like Shengbang Co., Ltd. and Zhaoyi Innovation seeing increases of 6.71% and 6.11% respectively [1] - The Digital Economy ETF (560800) also saw a rise of 1.27%, with a trading volume of 539.51 million yuan and a turnover rate of 0.95% [1] - The DeepSeek and Peking University collaboration introduced the Engram model, which separates static knowledge retrieval from complex calculations, enhancing AI infrastructure and providing a scalable technical path for large models in China [1] Group 2 - The AI wave is reshaping the semiconductor supply chain, with significant supply constraints in upstream core components, as noted by Datong Securities [2] - AI-driven chips are prioritizing advanced process capacities at companies like TSMC and Samsung, impacting traditional server CPU production [2] - The Digital Economy ETF closely tracks the China Securities Digital Economy Theme Index, selecting companies with high digital infrastructure and application levels [2] Group 3 - As of December 31, 2025, the top ten weighted stocks in the China Securities Digital Economy Theme Index accounted for 52.63% of the index, including companies like Dongfang Wealth and Cambricon [3] - The Digital Economy ETF has various connection options, including the Pengyang China Securities Digital Economy Theme ETF [3]