Nvidia shares were down 0.8% at $162.86 in premarket trading, in line with a slump in wider market futures. The stock rose 0.8% on Thursday and the company became the first to close above $4 trillion, ...

Futures fell as President Trump announced a 35% tariff vs. Canada after the S&P 500 and Nasdaq hit highs even as CoreWeave dived.

Chipmaker Nvidia became the first public company to top $4 trillion in value on Wednesday after a two-year investor frenzy.