Global stock markets advanced on Tuesday as enthusiasm for AI investments recovered following Anthropic's release of IPO documents. The filing showed revenue of $16.3 billion for the first half of 2026, compared with $1.2 billion a year earlier. The Nasdaq 100 finished Tuesday up 1%, while South Korea's Kospi rose as much as 4%. Investors have recently questioned whether markets will finance hundreds of billions of dollars in AI investment without clearer evidence that model developers can generate profits.