Group 1 - The A-share market experienced wide fluctuations on July 23, with the Shanghai Composite Index reaching a year-high of 3613.02 points before closing at 3582.3 points [1] - All four main contracts of the futures index (IF, IH, IC, IM) saw gains, with increases of 0.31%, 0.48%, 0.13%, and 0.06% respectively [1] - The total open interest in the futures market increased by 13,345 contracts, reaching 936,327 contracts, indicating a growing interest in futures trading [1] Group 2 - The performance of the top 20 positions in futures contracts showed mixed results, with IF's net short position rising to 25,505 contracts, while IH's net short position slightly decreased to 16,153 contracts [2] - Specific changes in positions included significant increases in long positions for IM, which saw an increase of 16,839 contracts, while IC's net short position rose to 14,381 contracts [2] - The overall analysis suggests that market divergence is increasing, and the short-term upward momentum in futures indices may slow down [2]