Big Short Investor Warns AI Revenue Concentration

AI revenue depends on two companies, one in trouble.

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Sep 22, 2026

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Big Short Investor Warns AI Revenue Concentration

AI revenue depends on two companies, one in trouble.

In brief

AI revenue depends on two companies, one in trouble. Steve Eisman warns 70% of AI revenue comes from OpenAI and anthropic, risking the entire ecosystem. Originally reported by 24/7 Wall St..

Eisman's AI Warning

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Steve Eisman, the money manager who shorted subprime and was portrayed by Steve Carell in The Big Short, warned on his September 21 podcast that the AI trade rests on dangerous concentration.

“70% of AI revenue of the hyperscalers is just from OpenAI and anthropic”

OpenAI's Recent Reassurance

OpenAI CFO Sarah Friar told CNBC on September 15 the company’s business is a diversified set of revenue streams with strong margins and a diversified chip supply chain.

NVIDIA's Market Position

NVDA price target

NVIDIA sits at the head with a market cap of $5.52 trillion, fiscal Q2 revenue of $96.22 billion, and data center revenue of $89.02 billion.

Microsoft's Role in AI

MSFT price target

Microsoft has a market cap of $3.68 trillion, Azure revenue over $100 billion, and a restructured OpenAI deal giving it a ~27% stake valued around $135 billion.

The Eisman Chain

Eisman’s warning hinges on OpenAI’s ability to generate cash for $250 billion in Azure services, or Microsoft’s capex becomes credit exposure to loss-making labs.

What to Watch Next

Watch OpenAI’s next funding round pricing near $1.5 trillion and Microsoft’s Q1 earnings to see if Azure growth holds near 45% without free cash flow decline.

What to remember

Steve Eisman warns 70% of AI revenue comes from OpenAI and anthropic, risking the entire ecosystem.

Read the original on 24/7 Wall St.

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