When Will SpaceX, Anthropic, and OpenAI Join the S&P 500 Index?

Three major AI companies—SpaceX, Anthropic, and OpenAI—are expected to go public in 2026 with valuations between $1-2 trillion. S&P Dow Jones is considering fast-tracking their S&P 500 index admission by reducing the required public trading period from one year to six months and potentially waiving profitability requirements, which would be critical since SpaceX and OpenAI remain unprofitable.