1. Index Trends - On September 25th, the Shanghai Composite Index had a change of -0.01%, closing at 3853.3 points with a trading volume of 1001.211 billion yuan; the Shenzhen Component Index had a change of 0.67%, closing at 13445.9 points with a trading volume of 1369.879 billion yuan [1]. - The CSI 1000 Index had a change of -0.37% and a trading volume of 464.745 billion yuan, with an opening price of 7521.32, a closing price of 7506.51, a daily high of 7563.08, and a low of 7487.12 [1]. - The CSI 500 Index had a change of 0.24% and a trading volume of 493.047 billion yuan, with an opening price of 7325.66, a closing price of 7341.32, a daily high of 7379.61, and a low of 7312.35 [1]. - The SSE 300 Index had a change of 0.6% and a trading volume of 669.867 billion yuan, with an opening price of 4563.98, a closing price of 4593.49, a daily high of 4613.95, and a low of 4558.84 [1]. - The SSE 50 Index had a change of 0.45% and a trading volume of 158.667 billion yuan, with an opening price of 2944.73, a closing price of 2952.74, a daily high of 2962.18, and a low of 2941.87 [1]. 2. Impact of Sector Movements on Indexes - The CSI 1000 Index rose -27.71 points from the previous closing price. Media and communication sectors significantly pulled the index up, while basic chemicals, machinery, and electronics sectors pulled it down [3]. - The CSI 500 Index rose 17.61 points from the previous closing price. Computer, machinery, and electronics sectors significantly pulled the index up, while the non - banking financial sector pulled it down [3]. - The SSE 300 Index rose 27.42 points from the previous closing price. Power equipment, non - ferrous metals, and communication sectors significantly pulled the index up, while the banking sector pulled it down [3]. - The SSE 50 Index rose 13.23 points from the previous closing price. Non - ferrous metals, pharmaceutical biology, and electronics sectors significantly pulled the index up, while food and beverage and banking sectors pulled it down [3]. 3. Futures Basis and Annualized Opening Costs - IM00 had an average daily basis of -69.91, IM01 of -156.48, IM02 of -236.36, and IM03 of -449.96 [13]. - IC00 had an average daily basis of -51.53, IC01 of -122.3, IC02 of -177.77, and IC03 of -356.12 [13]. - IF00 had an average daily basis of -8.53, IF01 of -24.0, IF02 of -33.81, and IF03 of -65.69 [13]. - IH00 had an average daily basis of 2.04, IH01 of -0.05, IH02 of 1.44, and IH03 of -0.53 [13]. 4. Futures Roll - over Point Differences and Annualized Costs - For IM, from 09:45 to 15:00, there were data on point differences and annualized costs for different roll - over combinations (e.g., IM00 - 01, IM00 - 02, etc.) [21]. - For IC, from 09:45 to 15:00, there were data on point differences and annualized costs for different roll - over combinations (e.g., IC00 - 01, IC00 - 02, etc.) [23]. - For IF, from 09:45 to 15:00, there were data on point differences and annualized costs for different roll - over combinations (e.g., IF00 - 01, IF00 - 02, etc.) [24]. - For IH, from 09:45 to 15:00, there were data on point differences and annualized costs for different roll - over combinations (e.g., IH00 - 01, IH00 - 02, etc.) [26].

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]