股指期货持仓日度跟踪-20251218

1. Report's Industry Investment Rating - Not provided in the given content 2. Report's Core View - The report provides a daily tracking of the positions of stock index futures, including the overall position changes and the significant changes in the top 20 seats of IF, IH, IC, and IM [1]. 3. Summary by Related Catalogs 3.1 IF (CSI 300) - Total Position and Main Contract Position Change: On December 17, the total position of the IF variety decreased by 628 lots, and the position of the main contract 2512 decreased by 28,826 lots [1][3]. - Top 20 Long Seats Position Change: Among the top 20 long seats of the IF variety on the day, Guotai Junan Futures ranked first with a total position of 43,137 lots. CITIC Construction Investment Futures had the largest long - position increase, adding 703 lots, while Guotai Junan Futures had the largest long - position decrease, reducing 2055 lots [1][4]. - Top 20 Short Seats Position Change: Among the top 20 short seats of the IF variety on the day, CITIC Futures ranked first with a total position of 42,917 lots. Guotai Junan Futures had the largest short - position increase, adding 1162 lots, while CITIC Futures had the largest short - position decrease, reducing 1252 lots [1][6]. 3.2 IH (SSE 50) - Total Position and Main Contract Position Change: On December 17, the total position of the IH variety decreased by 1896 lots, and the position of the main contract 2512 decreased by 8742 lots [1][9]. - Top 20 Long Seats Position Change: Among the top 20 long seats of the IH variety on the day, CITIC Futures ranked first with a total position of 11,533 lots. Huatai Futures had the largest long - position increase, adding 852 lots, while Guoxin Futures had the largest long - position decrease, reducing 649 lots [9]. - Top 20 Short Seats Position Change: Among the top 20 short seats of the IH variety on the day, CITIC Futures ranked first with a total position of 15,781 lots. GF Futures had the largest short - position increase, adding 601 lots, while CICC Futures had the largest short - position decrease, reducing 580 lots [10]. 3.3 IC (CSI 500) - Total Position and Main Contract Position Change: On December 17, the total position of the IC variety increased by 2748 lots, and the position of the main contract 2512 decreased by 18,652 lots [1][14]. - Top 20 Long Seats Position Change: Among the top 20 long seats of the IC variety on the day, Guotai Junan Futures ranked first with a total position of 41,554 lots. Guoxin Futures had the largest long - position increase, adding 741 lots, while CITIC Futures had the largest long - position decrease, reducing 1636 lots [1][15]. - Top 20 Short Seats Position Change: Among the top 20 short seats of the IC variety on the day, CITIC Futures ranked first with a total position of 46,932 lots. GF Futures had the largest short - position increase, adding 1008 lots, while CITIC Futures had the largest short - position decrease, reducing 1238 lots [1][17]. 3.4 IM (CSI 1000) - Total Position and Main Contract Position Change: On December 17, the total position of the IM variety decreased by 9704 lots, and the position of the main contract 2512 decreased by 38,174 lots [1][21]. - Top 20 Long Seats Position Change: Among the top 20 long seats of the IM variety on the day, Guotai Junan Futures ranked first with a total position of 54,378 lots. GF Futures had the largest long - position increase, adding 1148 lots, while CITIC Futures had the largest long - position decrease, reducing 4394 lots [1][21][22]. - Top 20 Short Seats Position Change: Among the top 20 short seats of the IM variety on the day, CITIC Futures ranked first with a total position of 81,320 lots. Ruijun An Futures (presumably a mis - written name) had the largest short - position increase, adding 881 lots, while Guotai Junan Futures had the largest short - position decrease, reducing 3118 lots [1][24].