CoreWeave (CRWV): Shares in the cloud-computing company, which has financed its data-center buildouts with huge amounts of debt, fell 5% in premarket trading. AI jitters sent CoreWeave stock tumbling 15% yesterday.

TSMC (TSM); (TW:2330): The world's largest contract chip maker posted another record profit, yet its American depositary receipts fell almost 2% as part of a broader AI selloff. Stock in rival Samsung (KR:005930) also fell 9% in Seoul.

Rocket Lab (RKLB): Shares in the aerospace firm slumped 9% ahead of the opening bell after it delayed the maiden launch of its Neutron rocket from this year to 2027.

UBS (CH:UBSG, UBS): Switzerland's last remaining flagship global bank is preparing to abandon its home base should Swiss lawmakers proceed with tougher capital requirements, The Wall Street Journal reported. UBS's U.S.-listed shares gained over 1% premarket, while its Swiss shares edged up.

Ericsson (SE:ERIC.B): Shares in the telecom equipment maker surged 9% in Stockholm after Ericsson reported strong growth in sales of network gear.