CoreWeave shares sank 10% in premarket trading on Wednesday after the Nvidia-backed company posted a bigger-than-expected loss, raising doubts about its ability to keep costs under check amid robust AI demand.

CoreWeave’s shares dropped as much as 20 per cent on Wednesday, after the artificial intelligence data centre operator reported bigger second-quarter losses than Wall Street expected.

Here are some of the stocks making notable moves in Wednesday's premarket action: CoreWeave shares are diving 9% after the AI cloud computing company delivered [a steeper loss than analysts expected](