Report Summary 1. Report Industry Investment Rating No information about the report industry investment rating is provided in the content. 2. Core Viewpoints - The market's judgment of international relations tends to swing between extreme optimism and extreme pessimism, causing market sentiment to fluctuate. Market volatility may persist as it overreacts to fast - changing international relations while having relatively well - formed expectations for slow - changing variables like interest rates [4]. - China's Q3 GDP in 2025 grew by 4.8% year - on - year, meeting expectations and laying a good foundation for achieving the annual target. Industrial production rebounded significantly, but consumer spending, real estate, and fixed - asset investment were drags [4]. - After the release of the communiqué of the Fourth Plenary Session of the 20th CPC Central Committee, broad - based indexes rose, and the deepening of the management of local state - owned "three capitals" also boosted market sentiment this week [4]. - A - share trading volume further shrank to less than 2 trillion yuan per day, and the margin balance generally increased, with most of the outflows from last week being replenished. All indexes had similar weekly gains [4]. 3. Summaries by Relevant Catalogs 3.1. Stock Index Futures Basis Situation - **Basis Changes**: This week, the basis of each futures variety fluctuated less, and the overall discount narrowed compared to last week. By the end of this Friday, the annualized discounts of IF, IC, and IM converged to around 2.6%, 8.9%, and 11.4% respectively. The near - month contracts in the term structure moved down slightly, with little change overall, and diversified hedging can be maintained [5]. - **Basis Data Table**: Detailed data on the last week's basis, this week's basis, basis changes, and index - enhanced annualized returns for different contracts of IF, IH, IC, and IM are provided. For example, in the IF contracts, the basis of IF2511 changed from - 18.43 last week to - 12.28 this week, with a change of 6.15 and an index - enhanced annualized return of 4.7% [2]. - **Basis Considering Dividends**: Data on the closing price, basis considering dividends, expected total dividend points, and annualized premium/discount rate for different contracts of IF, IH, IC, and IM are presented. For instance, for the IF2511 contract, the closing price is 4648.40, the basis considering dividends is - 10.88, the expected total dividend points are 1.40, and the annualized discount rate is - 3.04% [6]. 3.2. Hedging Profits and Losses - **Hedging Profit and Loss Data Table**: Data on last week's and this week's hedging profits and losses for different contracts of IF, IH, IC, and IM are provided. For example, the hedging profit of IF2511 last week was 2.00, and this week it was - 6.15 [13]. - **Hedging Profit and Loss Charts**: Charts showing the 60 - trading - day cumulative hedging profits and losses for IF, IH, IC, and IM contracts are presented, visually reflecting the changes in hedging profits and losses [12].

1. Report Industry Investment Rating No information provided in the given content. 2. Core Viewpoints of the Report No clear core viewpoints are presented in the provided text. The report mainly presents data on index trends, the impact of sector movements on indices, and data related to stock index futures basis and roll - over point differentials. 3. Summary by Relevant Catalogs Index Trends - On October 22, the Shanghai Composite Index had a change of -0.07%, closing at 3913.76 points with a trading volume of 7415.25 billion yuan; the Shenzhen Component Index had a change of -0.62%, closing at 12996.61 points with a trading volume of 9263.32 billion yuan [1]. - The CSI 1000 Index had a change of -0.43%, with a trading volume of 3321.81 billion yuan, an opening price of 7304.96, a closing price of 7312.21, a high of 7349.8, and a low of 7278.71 [1]. - The CSI 500 Index had a change of -0.8%, with a trading volume of 2862.0 billion yuan, an opening price of 7135.21, a closing price of 7128.48, a high of 7166.56, and a low of 7101.83 [1]. - The SSE 50 Index had a change of 0.09%, with a trading volume of 1238.41 billion yuan, an opening price of 2987.35, a closing price of 3010.1, a high of 3015.17, and a low of 2987.35 [1]. - The SSE 300 Index had a change of -0.33%, with a trading volume of 4409.35 billion yuan, an opening price of 4576.03, a closing price of 4592.57, a high of 4603.49, and a low of 4567.24 [1]. Impact of Sector Movements on Indices - The CSI 1000 Index decreased by 31.84 points compared to the previous closing price. Sectors such as computer, non - ferrous metals, and electronics significantly pulled the index down [3]. - The CSI 500 Index decreased by 57.14 points compared to the previous closing price. Sectors such as non - ferrous metals, electronics, and power equipment significantly pulled the index down [3]. - The SSE 300 Index decreased by 15.3 points compared to the previous closing price. Sectors such as banks and household appliances pulled the index up, while non - ferrous metals, electronics, and power equipment pulled the index down [3]. - The SSE 50 Index increased by 2.84 points compared to the previous closing price. Sectors such as banks, electronics, and petroleum and petrochemicals pulled the index up, while national defense and military industry, pharmaceutical biology, and non - ferrous metals pulled the index down [3]. Stock Index Futures Basis and Annualized Opening Costs - For IM contracts, IM00 had an average daily basis of -76.36, IM01 had -152.24, IM02 had -368.67, and IM03 had -578.19 [14]. - For IC contracts, IC00 had an average daily basis of -62.99, IC01 had -117.82, IC02 had -282.45, and IC03 had -459.31 [14]. - For IF contracts, IF00 had an average daily basis of -14.85, IF01 had -26.63, IF02 had -52.83, and IF03 had -89.76 [14]. - For IH contracts, IH00 had an average daily basis of -3.45, IH01 had -3.28, IH02 had -2.81, and IH03 had -4.66 [14]. Stock Index Futures Roll - over Point Differentials and Annualized Costs - For IM contracts, data on roll - over point differentials and their annualized costs at different times (e.g., 09:45, 10:00, etc.) are provided, such as at 09:45, IM00 - 01 was -73.02267, IM00 - 02 was -259.4522, etc. [26]. - For IC contracts, data on roll - over point differentials and their annualized costs at different times are provided, such as at 09:45, IC00 - 01 was -68.64222, IC00 - 02 was -225.568, etc. [23]. - For IF contracts, data on roll - over point differentials and their annualized costs at different times are provided, such as at 09:45, IF00 - 01 was -12.31678, IF00 - 02 was -41.14122, etc. [27]. - For IH contracts, data on roll - over point differentials and their annualized costs at different times are provided, such as at 09:45, IH00 - 01 was 1.4593333, IH00 - 02 was 1.3637778, etc. [25].

Report Summary 1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints - Since 2020, the annualized hedging costs of stock index futures for the three major stock indices (SSE 50, CSI 300, and CSI 500) have been more significantly affected by stock dividends, especially on the expiration date [2]. - The hedging costs of the far - season contracts of SSE 50 and CSI 300 stock index futures have long been stable around zero, and are slightly higher than the break - even point in most periods. The cost of the far - season contracts of CSI 500 stock index futures also fluctuates around zero, and before 2023, it was overall superior to the contracts of SSE 50 and CSI 300 in terms of return performance, showing relatively better cost - return characteristics [2]. - Based on the prediction for the fourth quarter of 2025, under the current market structure, preferentially allocating hedging tools represented by IC stock index futures may be a better choice for constructing market - neutral strategies [2]. 3. Summary According to the Table of Contents 3.1. Introduction - In the practice of the stock market - neutral strategy, although the hedging means of the strategy portfolio have been significantly enriched, stock index futures are still the core hedging tool for constructing market - neutral exposure. The basis structure of stock index futures directly determines the hedging cost of the neutral strategy and affects the final return performance [6]. - The basis of stock index futures can be decomposed into three core driving dimensions: the cost dimension from the time value of funds, the cash - flow dimension from index component stock dividends during the period, and the sentiment and expectation dimension reflecting the balance of market long - and short - side forces. The model is simplified to: Futures price - Index price = Corrected basis - Index dividends during the period [6]. 3.2. Dividend Situations of the Three Major Index Component Stocks 3.2.1. Dividend Point Indices of the Three Major Stock Indices - The dividend behavior of the three major index component stocks has significant seasonal characteristics, with dividend payments highly concentrated from April to September each year, peaking from June to August, especially from June to July [8][12]. - Compared with the market practice before 2020, in recent years, the phenomenon of the three major index component stocks paying dividends in the fourth quarter has increased. Since 2023, the A - share market dividend pattern has shown three new trends: year - end dividends, postponed dividend dates for some companies, and a deeper impact of dividend behavior on stock index and derivatives pricing [9][12]. 3.2.2. Dividend Yield Situations of the Three Major Stock Indices - The dividend yields of the SSE 50 and CSI 300 indices showed a "V - shaped" trend of first decreasing and then increasing from 2020 to 2024, which is related to the market adjustment from the end of 2023 to the beginning of 2024. The dividend yield center of the CSI 500 index has shifted down compared with the level before 2020 [13][15]. - The average annual dividend yields of the SSE 50 and CSI 300 indices, representing large - cap blue - chip stocks, are stable in the range of 2% - 3%, while the average dividend yield of the CSI 500 index, representing small - and medium - cap stocks, is relatively low. The dividends from June to July have a significant impact on futures pricing and basis structure [15][16]. 3.3. Annualized Hedging Costs of the Three Major Stock Index Futures 3.3.1. Estimation of Historical Data of Annualized Hedging Costs of the Three Major Stock Index Futures - A simplified model is used to estimate the dividend points of index component stocks and calculate the corrected basis. The annualized hedging costs of the near - month, far - month, near - season, and far - season contracts of the three major stock index futures in the past three years are calculated [18][20]. - The hedging costs of the far - season contracts of SSE 50 and CSI 300 stock index futures are long - term stable around zero and slightly higher than the break - even point, with low historical average hedging costs. Before 2023, the far - season contracts of CSI 500 stock index futures were overall superior to those of SSE 50 and CSI 300 in terms of return performance [20]. - The annualized hedging cost of near - month contracts may show significant peaks, indicating that the basis of stock index futures contracts may fluctuate extremely (deep premium or discount) when approaching the expiration date, which affects the actual cost of roll - over operations and strategy returns [26]. 3.3.2. Prediction of the Performance of Annualized Hedging Costs of the Three Major Stock Index Futures in the Fourth Quarter - From the fourth quarter of 2025 to the beginning of 2026, the impact of dividends on the basis of stock index futures and hedging strategies has weakened. The hedging costs of the current IC and IF main contracts are generally positive, providing a favorable window for market - neutral strategies [27][28]. - Based on the closing data on September 22, 2025, the overall hedging costs of the three major stock index futures are relatively low. After considering dividends, most of the hedging costs of IC and IF contracts are positive, especially for IC near - month and far - month contracts. The hedging costs of IH contracts are relatively high and even negative after considering dividends [29][30]. - Currently, market - neutral strategies using IC or IF futures contracts for hedging have relative advantages. IC near - season main contracts have lower hedging costs, while IF far - season contracts have more obvious cost advantages. IH contracts have relatively low cost - performance. Therefore, preferentially allocating hedging tools represented by IC stock index futures may be a better choice [30][31].

Report Summary 1. Index Trends - On October 14th, the Shanghai Composite Index fell by 0.62% to close at 3865.23 points, with a trading volume of 1209.984 billion yuan; the Shenzhen Component Index dropped by 2.54% to 12895.11 points, with a trading volume of 1366.25 billion yuan [1]. - The CSI 1000 Index declined by 1.95% with a trading volume of 506.69 billion yuan; the CSI 500 Index decreased by 2.46% with a trading volume of 505.839 billion yuan; the SSE 50 Index decreased by 0.21% with a trading volume of 219.194 billion yuan; the CSI 300 Index decreased by 1.2% with a trading volume of 808.959 billion yuan [1]. 2. Impact of Sector Movements on Indexes - For the CSI 1000 Index, sectors such as power equipment, computer, and electronics significantly pulled the index down [2]. - For the CSI 500 Index, power equipment and electronics sectors significantly pulled the index down [2]. - For the CSI 300 Index, banks and food and beverage sectors pulled the index up, while non - ferrous metals, communication, and electronics sectors pulled it down [2]. - For the SSE 50 Index, banks, food and beverage, and non - bank finance sectors pulled the index up, while pharmaceutical biology, non - ferrous metals, and electronics sectors pulled it down [2]. 3. Stock Index Futures Basis and Annualized Opening Costs - IM00 had an average daily basis of - 44.75, IM01 of - 145.04, IM02 of - 231.03, and IM03 of - 452.67 [13]. - IC00 had an average daily basis of - 38.77, IC01 of - 120.78, IC02 of - 173.92, and IC03 of - 336.26 [13]. - IF00 had an average daily basis of - 9.29, IF01 of - 24.15, IF02 of - 38.68, and IF03 of - 60.55 [13]. - IH00 had an average daily basis of - 1.61, IH01 of - 6.62, IH02 of - 7.19, and IH03 of - 5.78 [13]. 4. Stock Index Futures Rollover Point Differences and Annualized Costs - For IM, specific data on rollover point differences and their annualized costs are presented in the report, such as IM00 - 01 having values like - 73.02267 at 09:45 [22]. - For IC, detailed rollover point differences and annualized costs are provided, e.g., IC00 - 01 was - 68.64222 at 09:45 [24]. - For IF, specific values of rollover point differences and annualized costs are given, for example, IF00 - 01 was - 12.31678 at 09:45 [26]. - For IH, the rollover point differences and annualized costs are also detailed, like IH00 - 01 being 0.707 at 09:45 [27].

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report No clear core viewpoints are presented in the given text. The report mainly provides data on index trends, the impact of sector fluctuations on indices, futures basis, and futures rollover point differences. 3. Summary by Relevant Catalogs 3.1 Index Trends - On October 13th, the Shanghai Composite Index closed at 3889.5 points with a change of -0.19% and a trading volume of 1085.414 billion yuan; the Shenzhen Component Index closed at 13231.47 points with a change of -0.93% and a trading volume of 1269.327 billion yuan [1]. - The CSI 1000 Index had a change of -0.19% and a trading volume of 470.991 billion yuan, with an opening price of 7250.58, a closing price of 7519.76, a daily high of 7535.21, and a daily low of 7250.58 [1]. - The CSI 500 Index had a change of -0.29% and a trading volume of 473.286 billion yuan, with an opening price of 7135.1, a closing price of 7376.56, a daily high of 7391.82, and a daily low of 7135.1 [1]. - The SSE 50 Index had a change of -0.26% and a trading volume of 185.783 billion yuan, with an opening price of 2917.88, a closing price of 2967.21, a daily high of 2972.19, and a daily low of 2917.88 [1]. 3.2 Impact of Sector Fluctuations on Indices - The CSI 1000 Index rose -14.06 points compared to the previous closing price. Sectors such as electronics, non - ferrous metals, and national defense and military industry had a significant upward pull on the index, while sectors like machinery, pharmaceuticals, and automobiles had a downward pull [2]. - The CSI 500 Index rose -21.66 points compared to the previous closing price. Non - ferrous metals and electronics had an upward pull, while machinery, automobiles, and pharmaceuticals had a downward pull [2]. - The SSE 300 Index rose -22.85 points compared to the previous closing price. Non - ferrous metals and banks had an upward pull, while power equipment, pharmaceuticals, and non - bank finance had a downward pull [2]. - The SSE 50 Index rose -7.64 points compared to the previous closing price. Electronics, non - ferrous metals, and computers had an upward pull, while food and beverage, non - bank finance, and pharmaceuticals had a downward pull [2]. 3.3 Futures Basis and Annualized Opening Costs - For IM futures, IM00 had an average daily basis of -23.79, IM01 of -112.03, IM02 of -191.57, and IM03 of -414.08 [12]. - For IC futures, IC00 had an average daily basis of -15.26, IC01 of -87.02, IC02 of -132.55, and IC03 of -296.72 [12]. - For IF futures, IF00 had an average daily basis of -5.07, IF01 of -15.92, IF02 of -25.96, and IF03 of -45.99 [12]. - For IH futures, IH00 had an average daily basis of -1.73, IH01 of -4.12, IH02 of -4.67, and IH03 of -3.62 [12]. 3.4 Futures Rollover Point Differences and Annualized Costs - Details of the rollover point differences and their annualized costs for IM, IC, IF, and IH futures are provided in the corresponding tables, including data at different time points such as 09:45, 10:00, etc. [22][23][25][27].

Group 1: Report Overview - Report Title: Stock Index Hedging Weekly Report [1] - Report Date: October 10, 2025 [1] - Analysts: Yu Kan, Li Honglei [2] Group 2: Market Conditions - Policy: Before the National Day, the central bank's third - quarter regular meeting did not provide guidance on incremental relaxation measures. The focus was on supporting small and micro - enterprises and stabilizing foreign trade. The policy was prudent. In August, the profits of industrial enterprises above designated size increased by 20.4% year - on - year. In September, the Political Bureau meeting discussed the "15th Five - Year Plan," and the Fourth Plenary Session of the 20th Central Committee was to be held from October 20 - 23 [4]. - Overseas Events: During the National Day holiday, the depreciation of the yen and the rise of the US dollar index pushed up the price of gold. Domestic travel and consumption showed a mild recovery. A - share broad - based indexes were less responsive to overseas events [4]. - A - share Market: After the holiday, the Shanghai Composite Index broke through 3900 points, reaching a 10 - year high, but then had a sharp correction. The semiconductor sector had a large - scale adjustment. Leveraged funds were active, and the total A - share trading volume after the holiday rebounded to 2.5 trillion. Most broad - based indexes rose in the four trading days around the National Day. The CSI 500 rose by more than 2%, and the 50, 500, and 1000 indexes rose between 1 - 2%, while the ChiNext Index declined [4]. Group 3: Futures Basis - Basis Data: The basis of each futures variety fluctuated significantly in both directions recently. Compared with before the holiday, the basis of IH and IF changed little, while the discounts of IC and IM widened significantly. The annualized basis rates of IC and IM reached around 9% and 13% respectively. The term structure changed little. The 10 - month contract had a short remaining time, and position transfer could be carried out in advance [5]. - Specific Contract Basis: The report provided the basis data of IF, IH, IC, and IM contracts, including last week's basis, this week's basis, basis changes, and index - enhanced annualized returns. For example, for the IF2510 contract, last week's basis was - 6.29, this week's basis was - 3.03, the basis change was 3.26, and the index - enhanced annualized return was 4.3% [2]. - Basis after Considering Dividends: The report also presented the basis data after considering dividends for different contracts of the CSI 300, SSE 50, CSI 500, and CSI 1000, including closing prices, adjusted basis, expected total dividend points, and annualized premium/discount rates [6]. Group 4: Trading Volume and Open Interest - Trading Volume: This week, the average daily trading volume of IH was 66,712 lots, a 17.4% increase from the previous week; IF was 143,688 lots, a 5.3% increase; IC was 153,711 lots, a 4.0% increase; IM was 237,167 lots, an 8.2% decrease [5]. - Open Interest: This week, the open interest of IH was 105,743 lots, a 6.6% increase from the previous week; IF was 278,581 lots, a 6.3% increase; IC was 260,074 lots, a 5.4% increase; IM was 356,927 lots, a 1.5% increase [5]. Group 5: Hedging Profit and Loss - Hedging Profit and Loss Data: The report provided the hedging profit and loss data of IF, IH, IC, and IM contracts for last week and this week. For example, for the IF2510 contract, last week's hedging profit and loss was - 0.56, and this week's was - 3.26 [13].

Report Industry Investment Rating - Not provided in the content Core Viewpoints of the Report - The report systematically analyzes the basis structure of China's three major stock index futures and its impact on market-neutral strategies, finding that the basis can be deconstructed into three core dimensions: time value of funds, dividend cash flow, and market sentiment expectations. By introducing the concept of "corrected basis", it more accurately reflects the real hedging cost. A-share dividends show significant seasonal characteristics and three new trends since [year]. The dividend rates of the SSE and CSI 300 indices show a "V-shaped" trend, while the dividend rate center of the CSI 500 index has shifted downward. Currently, the costs of IC and IF contracts are generally positive, while the IH contract shows a negative value. It is recommended to prioritize the allocation of IC contracts and consider the far-quarter IF contracts, and be cautious with IH contracts [1][2]. Summary by Relevant Catalogs I. Basis Driving Factor Deconstruction and Theoretical Framework - The basis of stock index futures can be deconstructed into three core driving dimensions: the cost dimension from the time value of funds, the cash flow dimension from index component stocks' dividends, and the sentiment and expectation dimension reflecting the market's long-short power comparison. The "corrected basis" is defined by combining the time value and market sentiment expectations to simplify the analysis and focus on the core influencing factors of hedging costs [5]. II. Dividend Behavior Characteristics and Dividend Point Index Analysis - The dividend behavior of the three major index component stocks has significant seasonal characteristics, with dividends highly concentrated from [month] to [month], and [months] being the peak. Since [year], there have been three new trends in the A-share market's dividend pattern: the emergence of year-end dividends, the delay of some companies' traditional dividend dates, and the deepening of the impact of dividend behavior on stock index and derivative pricing [8]. III. Dividend Income Quantitative Calculation and Historical Trends - By comparing the yield differences between the total return index and the price index, the annual dividend income performance of the three major indices in the past five years is calculated. The SSE and CSI 300 indices show a "V-shaped" trend, while the dividend rate center of the CSI 500 index has shifted downward. The annualized dividend income of the SSE and CSI 300 indices is stable in the 2%-3% range, while that of the CSI 500 index is relatively low. The impact of dividends on futures pricing and basis structure during the concentrated dividend period cannot be ignored [10][11]. IV. Hedging Cost Time Series Analysis and Market Structure - A simplified model is used to estimate the dividend points of index component stocks and calculate the corrected basis. The far-quarter contracts of the SSE and CSI 300 stock index futures have long-term stable hedging costs around zero, and most of the time are slightly higher than the break-even point. The far-quarter contracts of the CSI 500 stock index futures also fluctuate around zero, and had better cost-benefit characteristics before [year]. The annualized hedging cost of near-month contracts has significant peaks, indicating extreme basis fluctuations near the contract expiration date, such as the abnormal peaks of over 150% observed in [year] [21]. V. Current Hedging Cost Comparison and Strategy Recommendations - From the fourth quarter of [year] to the beginning of [year], the impact of dividends on the stock index futures basis and hedging strategies has weakened. Currently, the hedging costs of IC and IF main contracts are generally positive, providing a favorable window for market-neutral strategies. IC and IF contracts have relatively low hedging costs, while IH contracts have relatively high costs. It is recommended to prioritize the allocation of IC contracts and consider the far-quarter IF contracts, and be cautious with IH contracts [22][24].

Index Trends - On September 29, the Shanghai Composite Index rose 0.9% to close at 3862.53 points with a turnover of 968.212 billion yuan; the Shenzhen Component Index rose 2.05% to close at 13479.43 points with a turnover of 1193.249 billion yuan [1]. - The CSI 1000 Index rose 1.36% with a turnover of 419.535 billion yuan, opening at 7415.13, closing at 7497.83, with a daily high of 7517.12 and a low of 7376.91 [1]. - The CSI 500 Index rose 1.51% with a turnover of 433.864 billion yuan, opening at 7251.52, closing at 7350.56, with a daily high of 7377.22 and a low of 7216.74 [1]. - The SSE 50 Index rose 1.09% with a turnover of 189.969 billion yuan, opening at 2940.04, closing at 2973.04, with a daily high of 3000.48 and a low of 2922.01 [1]. - The SSE 300 Index rose 1.54% with a turnover of 693.395 billion yuan, opening at 4555.03, closing at 4620.05, with a daily high of 4647.57 and a low of 4541.43 [1]. Impact of Sector Movements on Indexes - The CSI 1000 rose 100.24 points from the previous close, with sectors such as electronics, power equipment, and non - ferrous metals significantly pulling the index up [2]. - The CSI 500 rose 109.65 points from the previous close, with sectors such as electronics, non - bank finance, and power equipment significantly pulling the index up [2]. - The SSE 300 rose 70.0 points from the previous close, with sectors such as non - bank finance, power equipment, and non - ferrous metals significantly pulling the index up [2]. - The SSE 50 rose 32.02 points from the previous close, with sectors such as non - ferrous metals, non - bank finance, and electronics significantly pulling the index up, while the banking sector pulled it down [2]. Futures Basis and Annualized Opening Costs - For IM futures, IM00 had an average daily basis of - 33.34, IM01 of - 117.12, IM02 of - 191.69, and IM03 of - 412.21 [12]. - For IC futures, IC00 had an average daily basis of - 31.0, IC01 of - 100.17, IC02 of - 150.99, and IC03 of - 329.66 [12]. - For IF futures, IF00 had an average daily basis of - 5.02, IF01 of - 17.61, IF02 of - 23.81, and IF03 of - 50.41 [12]. - For IH futures, IH00 had an average daily basis of 1.54, IH01 of 0.15, IH02 of 1.98, and IH03 of 0.3 [12]. Futures Roll - over Point Differences and Annualized Costs - Various data on the roll - over point differences and their annualized costs for IM, IC, IF, and IH futures are presented in the report, including values at different time points such as 09:45, 10:00, etc. For example, for IM futures at 09:45, IM00 - 01 was - 73.02267, IM00 - 02 was - 259.4522, etc. [23][25][26]

Group 1: Index Trends - On September 24th, the Shanghai Composite Index rose by 0.83% to close at 3853.64 points, with a trading volume of 1015.708 billion yuan. The Shenzhen Component Index rose by 1.8% to close at 13356.14 points, with a trading volume of 1311.076 billion yuan [1]. - The CSI 1000 Index rose by 1.7%, with a trading volume of 494.398 billion yuan. The opening price was 7375.91, the closing price was 7534.22, the highest price was 7534.22, and the lowest price was 7342.47 [1]. - The CSI 500 Index rose by 1.99%, with a trading volume of 477.262 billion yuan. The opening price was 7140.31, the closing price was 7323.71, the highest price was 7327.02, and the lowest price was 7133.43 [1]. - The SSE 50 Index rose by 0.68%, with a trading volume of 157.195 billion yuan. The opening price was 2908.07, the closing price was 2939.51, the highest price was 2942.59, and the lowest price was 2908.07 [1]. - The SSE 50 Index rose by 0.68%, with a trading volume of 157.195 billion yuan. The opening price was 2908.07, the closing price was 2939.51, the highest price was 2942.59, and the lowest price was 2908.07 [1]. Group 2: Impact of Sector Movements on Indexes - The CSI 1000 rose 126.15 points from the previous closing price, with sectors such as electronics, computer, and power equipment significantly driving the index up [2]. - The CSI 500 rose 143.0 points from the previous closing price, with sectors such as electronics, power equipment, and pharmaceutical biology significantly driving the index up [2]. - The SSE 300 rose 46.29 points from the previous closing price, with sectors such as electronics, power equipment, and computer significantly driving the index up [2]. - The SSE 50 rose 20.0 points from the previous closing price, with sectors such as electronics and non - banking finance significantly driving the index up, while the banking sector pulled the index down [2]. Group 3: Stock Index Futures Basis and Annualized Opening Costs - IM00 had an average daily basis of - 77.26, IM01 had - 162.97, IM02 had - 245.25, and IM03 had - 458.47 [12]. - IC00 had an average daily basis of - 64.91, IC01 had - 135.65, IC02 had - 194.16, and IC03 had - 370.82 [12]. - IF00 had an average daily basis of - 9.42, IF01 had - 24.74, IF02 had - 33.98, and IF03 had - 62.97 [12]. - IH00 had an average daily basis of 1.28, IH01 had - 0.36, IH02 had 0.56, and IH03 had 0.71 [12]. Group 4: Stock Index Futures Roll - over Point Differences and Annualized Costs - Data on IM roll - over point differences and their annualized costs are presented at different time points from 09:45 to 15:00, such as at 09:45, IM00 - 01 was - 73.02267, IM00 - 02 was - 259.4522, etc. [23]. - Data on IC roll - over point differences and their annualized costs are presented at different time points from 09:45 to 15:00, such as at 09:45, IC00 - 01 was - 68.64222, IC00 - 02 was - 225.568, etc. [24]. - Data on IF roll - over point differences and their annualized costs are presented at different time points from 09:45 to 15:00, such as at 09:45, IF00 - 01 was - 12.31678, IF00 - 02 was - 41.14122, etc. [25]. - Data on IH roll - over point differences and their annualized costs are presented at different time points from 09:45 to 15:00, such as at 09:45, IH00 - 01 was 0.707, IH00 - 02 was 1.4593333, etc. [22]

1. Report Industry Investment Rating - No relevant content provided 2. Core Viewpoints of the Report - The report presents a daily data tracking of stock index futures on September 23, 2025, including index trends, the impact of sector fluctuations on indices, basis and annualized opening costs of stock index futures, and points differences in contract roll - over and their annualized costs [1] 3. Summary by Relevant Catalogs 3.1 Index Trends - On September 23, the Shanghai Composite Index fell 0.18% to 3821.83 points with a trading volume of 1071.698 billion yuan; the Shenzhen Component Index fell 0.29% to 13119.82 points with a trading volume of 1422.684 billion yuan [1] - The CSI 1000 Index fell 1.09% with a trading volume of 503.96 billion yuan, opening at 7500.62, closing at 7408.07, with a high of 7504.23 and a low of 7261.67 [1] - The CSI 500 Index fell 0.61% with a trading volume of 495.069 billion yuan, opening at 7240.85, closing at 7180.71, with a high of 7250.82 and a low of 7045.56 [1] - The SSE 50 Index fell 0.09% with a trading volume of 168.987 billion yuan, opening at 2917.99, closing at 2919.51, with a high of 2938.12 and a low of 2891.78 [1] - The CSI 300 Index fell 0.06% with a trading volume of 680.514 billion yuan, opening at 4536.76, closing at 4519.78, with a high of 4560.73 and a low of 4459.73 [1] 3.2 Impact of Sector Fluctuations on Indices - The CSI 1000 Index dropped 81.41 points compared to the previous close, with sectors such as Computer and Medicine & Biology significantly pulling the index down [2] - The CSI 500 Index dropped 44.42 points compared to the previous close. The Power Equipment sector significantly pulled the index up, while sectors like Medicine & Biology, Non - Banking Finance, and Computer pulled it down [2] - The CSI 300 Index dropped 2.83 points compared to the previous close. Sectors such as Bank, Communication, and Electronics pulled the index up, while Computer, Medicine & Biology, and Non - Banking Finance pulled it down [2] - The SSE 50 Index dropped 2.67 points compared to the previous close. Sectors such as Bank, Non - Ferrous Metals, and Public Utilities pulled the index up, while Non - Banking Finance, Electronics, and Medicine & Biology pulled it down [2] 3.3 Basis and Annualized Opening Costs of Stock Index Futures - IM00 had an average daily basis of - 107.49, IM01 of - 195.71, IM02 of - 281.02, and IM03 of - 488.76 [12] - IC00 had an average daily basis of - 112.22, IC01 of - 186.93, IC02 of - 254.9, and IC03 of - 426.14 [12] - IF00 had an average daily basis of - 23.49, IF01 of - 36.88, IF02 of - 51.72, and IF03 of - 78.0 [12] - IH00 had an average daily basis of - 0.65, IH01 of - 1.94, IH02 of - 0.77, and IH03 of 0.52 [12] 3.4 Points Differences in Contract Roll - over and Their Annualized Costs - For IF, from 09:45 to 15:00, the points differences in contract roll - over and their annualized costs fluctuated. For example, at 09:45, IF00 - 01 was - 12.31678 [24][26] - For IH, from 09:45 to 15:00, the points differences in contract roll - over and their annualized costs also fluctuated. For example, at 09:45, IH00 - 01 was 0.707 [29] - For IM, from 09:45 to 15:00, the points differences in contract roll - over and their annualized costs changed. For example, at 09:45, IM00 - 01 was - 73.02267 [31] - For IC, from 09:45 to 15:00, the points differences in contract roll - over and their annualized costs varied. For example, at 09:45, IC00 - 01 was - 68.64222 [32]