:AI cloud platform operator CoreWeave said on Wednesday it closed a $650 million secondary share sale to investors, a deal that a source familiar with the matter said more than tripled the company's valuation over the past year to $23 billion. The investors were led by Jane Street, Magnetar, Fidelity Management and Macquarie Capital, and the higher valuation illustrated growing interest in the business of cloud infrastructure for generative artificial intelligence. CoreWeave provides access to