汇成真空股价连续4天下跌累计跌幅13.78%，前海开源基金旗下1只基金持8.95万股，浮亏损失200.04万元

Group 1 - The core viewpoint of the news is that Huicheng Vacuum's stock has experienced a significant decline, with a 3.41% drop on October 17, leading to a total decrease of 13.78% over four consecutive days [1] - As of the report, Huicheng Vacuum's stock price is 139.80 yuan per share, with a trading volume of 3.81 billion yuan and a turnover rate of 6.53%, resulting in a total market capitalization of 13.98 billion yuan [1] - Huicheng Vacuum Technology Co., Ltd. specializes in the research, production, and sales of vacuum coating equipment, with its main business revenue composition being 49.29% from industrial products, 19.27% from other consumer products, 10.64% from scientific research, 9.91% from consumer electronics, 5.88% from technical services, and 5.01% from accessories and consumables [1] Group 2 - From the perspective of fund holdings, the Qianhai Kaiyuan Fund has a significant position in Huicheng Vacuum, with its Qianhai Kaiyuan High-end Equipment Manufacturing Mixed A Fund holding 89,500 shares, accounting for 8.22% of the fund's net value, making it the third-largest holding [2] - The fund has incurred a floating loss of approximately 442,100 yuan today, with a total floating loss of 2,000,400 yuan during the four-day decline [2] - The Qianhai Kaiyuan High-end Equipment Manufacturing Mixed A Fund was established on March 27, 2015, with a current scale of 118 million yuan, and has achieved a year-to-date return of 41.5% and a one-year return of 56.19% [2]