S&P 500 rejects SpaceX, also blocking entry for OpenAI and Anthropic Ars TechnicaSpaceX blocked from early US benchmark index entry as S&P reaffirms existing rules ReutersSpaceX and Other Mega IPOs May Wait Years to Join the S&P 500 Bloomberg.comThe S&P 500 will initially exclude SpaceX but Elon Musk is coming for your retirement savings anyway Fortune