A.I. company CoreWeave not having a great IPO

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CoreWeave is a cloud-processing company with a big Nvidia investment and 250,000 of its hard-to-find GPUs. Its stock went "splat" today, as MarketWatch put it, trading below its $40 IPO—which was itself lower than the $47 to $55 the company had hoped for. The business press is nonetheless hyping it as the biggest tech I…