Market debut of AI company behind Claude chatbot will be one of largest in US history, a test of its financial viability

Anthropic has publicly filed for a stock market listing, one of the largest debuts in history. The company’s float on the US market is likely to be a high-water mark in the multitrillion-dollar AI boom and a test of its financial viability.

Analysts and investors have valued the San Francisco-based company, founded in 2021, at more than $1.5tn. The company, which will will list under the symbol ANT, confidentially filed with US financial regulators for an initial public offering in June.