US artificial intelligence (AI) company Anthropic publicly filed its prospectus for an initial public offering (IPO) on Monday, which could become the largest stock market debut in history, according to CGTN — revenue reached US$ 16.29 billion in the first half of 2026, up from US$ 1.16 billion year on year, with a net loss of US$ 80.7 billion in the half, of which US$ 72.4 billion came from changes in the fair value of convertible notes.