Anthropic's initial public offering filing drove a 2.4% rise in Nvidia shares on Monday. Investors disagree over the listing's reported $2 trillion valuation, and some had discussed $1.5 trillion after revenue growth slowed. Anthropic plans a Nasdaq listing under ANT and could start trading as early as November 16. The filing shows first-half revenue of $16.3 billion, more than triple the $4.6 billion recorded for all of 2025. Nigel Green, CEO of deVere Group, warned that public shareholders would bear the risk if spending exceeds revenue.