Stocks are forward looking. The fact that they did well last quarter is nice and all but they were predicting drops in sales in China. So the market reacted by dropping Nvidia price.

Nvidia stock has been priced for about tenfold growth already. Unless they literally grow 1000% there is little reason for the price to move.

It was priced in already

Probably because every large LLM provider is trying to develop their own silicon to run their models.