海油发展股价跌5.33%，大成基金旗下1只基金重仓，持有2.6万股浮亏损失6240元

Group 1 - CNOOC Development Co., Ltd. experienced a decline of 5.33% in stock price, trading at 4.26 CNY per share with a total market capitalization of 43.303 billion CNY as of the report date [1] - The company, established on February 22, 2005, and listed on June 26, 2019, specializes in energy technology services, FPSO production technology services, energy logistics services, and safety, environmental protection, and energy-saving products and services [1] - The revenue composition of the company includes energy logistics services at 51.51%, energy technology services at 35.37%, and low-carbon environmental and digitalization services at 17.13% [1] Group 2 - Dazhong Fund has a significant holding in CNOOC Development, with the Dazhong Zhihui Quantitative Multi-Strategy Mixed A Fund (004209) holding 26,000 shares, representing 0.81% of the fund's net value, ranking as the fifth largest holding [2] - The fund has reported a floating loss of approximately 6,240 CNY for the day [2] - The Dazhong Zhihui Quantitative Multi-Strategy Mixed A Fund was established on March 21, 2017, with a current size of 8.1705 million CNY, yielding a return of 6.65% year-to-date and 33.73% over the past year [2]