寒武纪-U成交额达100亿元，现跌0.75%。

Group 1 - The core point of the article is that Cambrian's transaction volume has reached 10 billion yuan, but the stock has decreased by 0.75% [1] Group 2 - Cambrian's transaction volume indicates significant market activity, reflecting investor interest [1] - The decline in stock price suggests potential market volatility or investor sentiment concerns despite the high transaction volume [1]