期指：边际驱动有限，仍偏震荡格局

Report Summary 1. Report Industry Investment Rating No information provided in the given content. 2. Core View of the Report The marginal driving force of stock index futures is limited, and it remains in a volatile pattern. On January 28, the monthly contracts of the four major stock index futures showed mixed gains and losses. The total trading volume of stock index futures declined on the trading day, indicating a cooling of investors' trading enthusiasm. The total positions of IF and IH increased, while those of IC and IM decreased [1][2]. 3. Summary by Related Catalogs 3.1. Stock Index Futures Data Tracking - Closing Prices and Price Changes: On January 28, IF rose 0.08%, IH fell 0.03%, IC rose 0.66%, and IM rose 0.22%. The closing prices and price - change percentages of various contracts of IF, IH, IC, and IM are detailed in the table [1]. - Trading Volume and Position Changes: The total trading volume of IF, IH, IC, and IM decreased, with decreases of 62 lots, 4488 lots, 40713 lots, and 68320 lots respectively. The total positions of IF and IH increased by 15622 lots and 3905 lots respectively, while those of IC and IM decreased by 904 lots and 15637 lots respectively [1][2]. - Basis: The basis data of IF, IH, IC, and IM are presented, showing the differences between futures prices and spot prices [1]. - Top 20 Member Position Changes: The changes in long and short positions of the top 20 members of IF, IH, IC, and IM contracts are provided, including net changes in some contracts [5]. 3.2. Trend Intensity The trend intensity of IF and IH is 1, and that of IC and IM is also 1. The trend intensity ranges from - 2 to 2, with - 2 being the most bearish and 2 being the most bullish [6]. 3.3. Important Drivers - Quantitative Fund News: There are rumors that regulatory authorities plan to implement the 'T + 3' system for the program trading of major quantitative funds, but many billion - level quantitative private equity managers said they have not received relevant requirements [6]. - Fed Policy Expectations: As the expectation that BlackRock's chief investment officer Rick Rieder may replace Powell grows, some futures and options traders are betting on the Fed to turn dovish. Rieder said earlier this month that the Fed's benchmark interest rate should be lowered from the current 3.5% - 3.75% range to 3% [6]. - Stock Market Performance: The A - share market showed narrow fluctuations. The Shanghai Composite Index rose 0.27%, the Shenzhen Component Index rose 0.09%, and the ChiNext Index fell 0.57%. The turnover of A - shares reached 2.99 trillion yuan. The Hang Seng Index rose 2.58%, reaching a 4 - and - a - half - year high [6][7].