Anthropic S-1: Record Growth, but is the IPO a Buy?

Anthropic Releases S-1 In late October, Anthropic officially filed its highly anticipated Form S-1 (required for an IPO) with the SEC. The company will IPO under the "ANT" ticker and is expected to garner a $2 trillion valuation (based on the $100B expected IPO raise). Founded just 5 years ago by former OpenAI employee Dario Amodei and six others, Anthropic has become the fastest-growing company in history. Against all odds and tough competition, Anthropic's large language model (LLM) "Claude" has become a staple among deep-pocketed, sticky enterprise customers. Anthropic: The Fastest Growing Company in History In the first half of 2026, Anthropic reported $16.3 billion in revenue (1,300% YoY growth).