
The Signs Were All There | Mike Green on When Passive Flows Meet the Largest IPO in History
From Excess Returns by Excess Returns
June 11, 2026 · 44 min · Season 1 · Episode 455
About this episode
Mike Green discusses the impact of passive investing and AI IPOs on the stock market.
Mike Green joins Excess Returns to explain why passive investing, index construction, SpaceX, AI IPOs and mega-cap concentration may be changing how the stock market actually works. We discuss how passive flows can affect prices, why AI earnings may be more circular than investors think, what could break the current market narrative, and why the economy feels much weaker for many households than the headline data suggests. Michael Green Twitter https://x.com/profplum99 Simplify Asset Management https://www.simplify.us/ Topics covered: Why the SpaceX IPO has turned passive investing into a mainstream market structure debate How index committees and passive flows can influence individual stocks Why low float, Nasdaq demand and passive buying could create unusual IPO dynamics How new AI-related equity issuance could change the supply-demand balance in the stock market The research behind passive flows, market impact and cap-weight concentration Why Mike thinks passive buying explains more of mega-cap outperformance than AI fundamentals The circular financing risk in AI, including Nvidia, CoreWeave, Google and Anthropic Why buy-the-dip flows, ETFs, CTAs and vol control funds matter…
People in this episode
Host: Excess Returns
Guest: Mike Green
Topics covered
- passive investing
- index construction
- AI IPOs
- mega-cap concentration
- market dynamics
- economic data
- circular financing risk
Keywords
- passive flows
- SpaceX IPO
- AI earnings
- market narrative
- mega-cap outperformance
- buy-the-dip
- ETFs
- household stress
Mentioned in this episode
Organizations: SpaceX, Nvidia, CoreWeave, Google, Anthropic, Simplify Asset Management
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