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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