J.P. Morgan
May 11, 2026
The Weekly Brief
Weekly UpdateEquitiesRates Govt BondsRates CreditEnergyMaterials
The Weekly Brief argues that potential IPOs from SpaceX, OpenAI, and Anthropic will have a limited immediate impact on the S&P 500 due to index eligibility rules. Market data shows a strong week for Emerging Markets and Tech stocks, while Brent oil saw a sharp weekly decline.
Key Takeaways
- 1.Potential high-profile AI IPOs from companies like OpenAI, Anthropic, and SpaceX are unlikely to enter the S&P 500 immediately due to strict eligibility criteria regarding profitability and float.
- 2.The eventual inclusion of these mega-private tech firms would likely dilute, rather than increase, the current high concentration of mega-cap stocks in the S&P 500.
- 3.Emerging Markets (MSCI EM) and Japan (TOPIX) showed the strongest weekly performance among major equity indices, rising 6.2% and 2.7% respectively.
Table of Contents
- Thought of the week
- AI IPOs could have limited impact on the overall S&P 500
- The Week Ahead
- Market statistics
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Securities
OpenAIS&P 500SpaceXAnthropicTPXMXEF
Themes
AI IPO Market DynamicsIndex Concentration Dilution
Regions
North AmericaEuropeAsia PacificUnited StatesChinaUnited Kingdom
