Hong Kong Stock Movement: FOURSEMI's stock price surged by 16.21%, with clear capital flow. What caused such volatility in market sentiment?

Hong Kong Stock Movement FOURSEMI rose by 16.21%. There has been no significant news recently; trading is active, and capital flow is evident. Considering the sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation. no_news Stocks with High Trading Volume in the Industry SMIC rose by 1.57%. Based on recent key news: On April 11, the U.S. Congress promoted the "Multilateral Coordination Act on Hardware Technology Control" (MATCH), posing a threat to China's semiconductor industry. This act may restrict advanced chip manufacturing capabilities of companies like SMIC and prohibit U.S. engineers from providing support, leading to market concerns about SMIC's future development. Source: Investing.com The semiconductor industry faces policy pressure, increasing volatility. GigaDevice rose by 9.65%. Based on recent key news: On April 14, GigaDevice and Geely Automobile established a joint innovation laboratory to promote high-performance MCU applications and facilitate the intelligent development of China's automotive industry. This collaboration has enhanced market confidence in GigaDevice's technological strength, driving up the stock price. Source: Guandian.com On April 13, Qingyun Technology's customized storage solution project entered the trial production stage, with mass production expected in 2026. The market is optimistic about the high prosperity of the storage industry and the company's performance growth expectations, supporting the rise in stock price. Source: Kanjian Finance Recently, the market has recognized GigaDevice's high valuation, with a dynamic price-to-earnings ratio reaching 112 times, reflecting investors' confidence in the company's continued high growth performance. Source: Kanjian Finance The storage industry is highly prosperous, with strong domestic expansion. Huahong Semiconductor rose by 1.80%. Based on recent key news: On April 11, the "Multilateral Coordination Act on Hardware Technology Control" (MATCH) promoted by the U.S. Congress poses a threat to China's semiconductor industry, potentially restricting advanced chip manufacturing capabilities of companies like Huahong Semiconductor, leading to increased market concerns about its future development. Source: Investing.com On April 13, the semiconductor industry is shifting towards advanced packaging chip architecture to improve system-level yield. This technological trend may positively impact Huahong Semiconductor's production efficiency and cost structure. Source: Investing.com The semiconductor industry faces dual challenges of policy and technology. Stocks with High Market Capitalization in the Industry Lanqi Technology fell by 0.66%, with a market capitalization of HKD 258.6 billion, and there has been no significant news recently. Trading is active, and capital flow is evident. Considering the sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation