# Wall Street has been rolling out the red carpet for some of the most eagerly anticipated public debuts in recent memory.

*business · news · 2026-05-06 · CNBC*

## Key points

- Index providers are changing rules to allow faster inclusion of mega-IPOs like SpaceX and Anthropic.
- Bank of America warns that a flood of IPO shares could end the stock market's bull run.
- The expected SpaceX and Anthropic IPOs may undermine the 'equity shrinkage' bull case.
- Passive funds may be forced to sell existing high-weighted holdings to accommodate these mega-IPOs.
- SpaceX reportedly seeks a $2 trillion IPO valuation, while Anthropic may exceed $900 billion.

**Companies:** SpaceX, Anthropic
**Countries:** United States

[Read the full story on CNBC](https://www.cnbc.com/2026/05/06/spacex-and-anthropic-mega-ipos-could-mark-end-of-bull-run-bank-of-america-suggests.html)

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