东微半导股价冲高回落，技术面与行业分化成主因

Group 1: Stock Performance - The stock of Dongwei Semiconductor opened at 94.64 yuan, peaked at 100.88 yuan (an increase of 6.02%), but closed at 98.12 yuan, indicating a high volatility of 7.76% throughout the day [1] - From January 15 to February 13, the stock experienced a total fluctuation of 17.85%, with a single-day increase of 7.27% on February 12, leading some investors to lock in profits during the peak [1] Group 2: Industry Sector Situation - Despite strong capital expenditure expectations for AI infrastructure (with the four major CSP manufacturers expected to exceed 670 billion yuan in 2026), the semiconductor sector showed flat overall performance (semiconductor index change was 0.00%) [2] - Market funds are shifting between sub-sectors, with more attention on storage chips, which may have diverted short-term focus from power semiconductor stocks [2] Group 3: Company Fundamentals - Dongwei Semiconductor reported a 41.60% year-on-year revenue growth and a 58.46% increase in net profit for Q3 2025, but the cash flow situation raised market concerns with a negative cash flow of -436.59% [3] - On the day in question, there was a net inflow of 27.19 million yuan from institutional investors, while retail investors experienced a net outflow, reflecting market divergence regarding short-term earnings quality [3]