周四（7月31日），散户抱团概念股指数/迷因股（meme stock）指数跌1.23%，报13.36点，7月份累计上涨9.72%，7月24日曾达到15.76点。

Core Insights - The meme stock index declined by 1.23% on Thursday, July 31, closing at 13.36 points [1] - In July, the meme stock index experienced a cumulative increase of 9.72% [1] - The index reached a peak of 15.76 points on July 24 [1]