S&P 500 blocks fast-track entry for SpaceX, won't waive profitability rule for OpenAI and Anthropic

Ars Technica reported that the S&P 500 index committee declined to fast-track SpaceX's entry and reaffirmed rules that keep unprofitable AI firms — including OpenAI and Anthropic — out of the index until they meet profitability requirements. The story topped Hacker News at 1,396 points and 480 comments, a sign it touched a nerve in the developer and investor community.

The substance is a governance reminder: index inclusion follows hard financial criteria (notably GAAP profitability), and the most hyped private AI companies don't yet qualify regardless of valuation. That lands pointedly the same week Anthropic filed an S-1 at a ~$965B valuation, sharpening the gap between private-market enthusiasm and public-market discipline.

The HN reaction captured the week's skeptical mood around AI valuations — the same vein as jokes that Anthropic's raise 'reads like any startup fundraise' and that a firm seeking a global development pause is simultaneously chasing a near-trillion-dollar listing. It's a useful counterweight to the relentless capability narrative.

Caveats: index rules are mechanical and not a judgment on business quality; once these firms turn GAAP-profitable, inclusion follows. What to watch: whether Anthropic's eventual public numbers show a profitability path, and how index dynamics shape institutional exposure to the AI trade as more of these companies pursue listings.