金融工程日报：沪指震荡微跌，全市成交额不足1.7万亿创近50日新低-20251022

========= - The Shanghai Composite Index experienced a slight decline with a total market turnover of less than 1.7 trillion yuan, marking a 50-day low[1] - On October 22, 2025, the SSE 50 Index performed well among scale indices, while the Beijing 50 Index performed well among sector indices, and the CSI 300 Value Index performed well among style indices[2] - The sectors that performed well included petroleum and petrochemicals, banking, real estate, home appliances, and media, while the sectors that performed poorly included agriculture, forestry, animal husbandry, and fishery, non-ferrous metals, electric power, defense and military, and coal[2] - The market sentiment showed 74 stocks hitting the daily limit up and 8 stocks hitting the daily limit down at the close[2] - The financing balance as of October 21, 2025, was 24.443 trillion yuan, with a financing balance of 24.273 trillion yuan and a securities lending balance of 170 billion yuan[2] - The ETF with the highest premium on October 21, 2025, was the Oil and Natural Gas ETF, while the ETF with the highest discount was the Innovation 100 ETF[3] - The median annualized discount rates for the main contracts of the SSE 50, CSI 300, CSI 500, and CSI 1000 stock index futures over the past year were 0.15%, 3.05%, 10.33%, and 12.81%, respectively[3] - The stock with the most institutional research in the past week was Huace Testing, which was surveyed by 118 institutions[4] - The top ten stocks with the highest net inflows from institutional seats on October 22, 2025, included Rongxin Culture, Keboda, Teyi Pharmaceutical, Huayi Group, and Sanwei Communication[4] - The top ten stocks with the highest net inflows from Northbound Trading on October 22, 2025, included Sanwei Communication, Hunan Baiyin, Keboda, Teyi Pharmaceutical, and Guangming Real Estate[4] =========