Nvidia shares were slightly lower in Wednesday trading. Doubts about its China sales look to be weighing on the stock.

Nvidia shares were down 0.2% at $135.22. The stock rose 3.2% the previous day.

The headline news is likely to be around how restrictions on Nvidia’s sales of H20 chips for the Chinese market will affect the company in the short term, with worries that could lead to underwhelming guidance.