1. Index Trends - On June 26, the Shanghai Composite Index fell by 0.22% to close at 3448.45 points, with a trading volume of 603.095 billion yuan; the Shenzhen Component Index fell by 0.48% to close at 10343.48 points, with a trading volume of 980.056 billion yuan [1]. - The CSI 1000 Index fell by 0.45%, with a trading volume of 343.746 billion yuan. The opening price was 6272.44, the closing price was 6247.79, the highest price was 6310.54, and the lowest price was 6244.78 [1]. - The CSI 500 Index fell by 0.41%, with a trading volume of 235.224 billion yuan. The opening price was 5868.29, the closing price was 5838.25, the highest price was 5885.25, and the lowest price was 5835.34 [1]. - The SSE 50 Index fell by 0.34%, with a trading volume of 87.101 billion yuan. The opening price was 2740.23, the closing price was 2738.47, the highest price was 2747.61, and the lowest price was 2734.95 [1]. 2. Impact of Sector Movements on Indexes - The CSI 1000 Index dropped 28.37 points from the previous closing price. Sectors such as automobiles, electronics, and pharmaceuticals significantly dragged down the index [2]. - The CSI 500 Index dropped 24.3 points from the previous closing price. The banking sector significantly boosted the index, while sectors such as power equipment, pharmaceuticals, and electronics significantly dragged it down [2]. - The SSE 300 Index dropped 14.05 points from the previous closing price. Sectors such as banking, communications, and food and beverages significantly boosted the index, while sectors such as power equipment, automobiles, and non - bank finance significantly dragged it down [2]. - The SSE 50 Index dropped 9.26 points from the previous closing price. Sectors such as banking, food and beverages, and public utilities significantly boosted the index, while sectors such as electronics, pharmaceuticals, and non - bank finance significantly dragged it down [2]. 3. Stock Index Futures Basis and Annualized Opening Costs - For IM contracts, IM00 had an average daily basis of - 45.13, IM01 had - 100.83, IM02 had - 162.62, and IM03 had - 331.27 [12]. - For IC contracts, IC00 had an average daily basis of - 35.8, IC01 had - 76.94, IC02 had - 119.69, and IC03 had - 235.25 [12]. - For IF contracts, IF00 had an average daily basis of - 26.42, IF01 had - 38.77, IF02 had - 43.57, and IF03 had - 74.93 [12]. - For IH contracts, IH00 had an average daily basis of - 24.19, IH01 had - 28.38, IH02 had - 27.35, and IH03 had - 26.96 [12]. 4. Stock Index Futures Roll - over Point Differences and Annualized Costs - For IM contracts, data on roll - over point differences and their annualized costs at different time points are provided, such as at 09:45, IM00 - 01 was - 53.1193, IM00 - 02 was - 158.791, etc. [22]. - For IC contracts, data on roll - over point differences and their annualized costs at different time points are provided, such as at 09:45, IC00 - 01 was - 26.1467, IC00 - 02 was - 90.0318, etc. [24]. - For IF contracts, data on roll - over point differences and their annualized costs at different time points are provided, such as at 09:45, IF00 - 01 was - 5.99267, IF00 - 02 was - 13.4098, etc. [29]. - For IH contracts, data on roll - over point differences and their annualized costs at different time points are provided, such as at 09:45, IH00 - 01 was - 1.29644, IH00 - 02 was 1.559889, etc. [28]