金融工程日报：沪深两市再度分化，CPO概念股爆发、光伏题材回调-20250715

• The report does not contain any specific quantitative models or factors for analysis[1][2][3] - The report provides a detailed analysis of market performance, including indices, sector performance, and concept themes[2][6][7][9] - Market sentiment is analyzed through the number of stocks hitting daily price limits, with 51 stocks hitting the upper limit and 28 hitting the lower limit[12][13] - The report includes data on market fund flows, specifically the balance of margin trading and short selling, which stood at 18,854 billion yuan as of July 14, 2025[18][21] - ETF premium and discount rates are discussed, with the highest premium being 5.22% for the Guozheng 2000 ETF and the highest discount being 0.84% for the ChiNext Pharmaceutical ETF[23][24] - Block trading data is provided, showing an average discount rate of 5.77% over the past six months, with a daily trading amount of 11 billion yuan on July 14, 2025[25][26] - The report also covers the annualized discount rates of major stock index futures, with the Shanghai 50 index futures having an annualized discount rate of 2.47% on July 15, 2025[27][30] - Institutional attention and trading data are included, highlighting the stocks with the highest net inflows and outflows from institutional seats and Northbound trading[4][34][35]