Business · Markets · 2 hrs ago
Wall Street leaders disagree over whether AI investment is a bubble
Citadel founder Ken Griffin warned that AI investment is probably in a bubble.
He raised concerns that supplies of graphics chips could outgrow demand and that companies may not earn enough from their spending.
Blackstone executive John Gray said demand for computing remains strong, while data-center capacity is limited.
He pointed to rising prices for computing services and data-center rentals as signs of tight supply.
Amazon, Google, Meta, Microsoft, Oracle and CoreWeave have issued about $193 billion in bonds for AI infrastructure by early August, far above their 2024 total.
UBS expects major cloud companies to spend $4.1 trillion on AI infrastructure from 2026 to 2028.
Nvidia’s results next month will help test whether AI spending is producing real demand and earnings.
Wall Street leaders Ken Griffin and John Gray disagree over whether investment in artificial intelligence has become a bubble.
Griffin said investors are almost certainly in an AI bubble, citing concerns about GPU oversupply, chip life spans and whether investment will raise productivity.
Gray said computing demand remains strong and data center supply is limited.
Companies including Amazon, CoreWeave, Google, Meta, Microsoft and Oracle issued about $193 billion in bonds for AI infrastructure by early August.
Nvidia’s earnings report next month is expected to offer a test of whether AI infrastructure spending is translating into demand and results.
- Who
- Citadel founder Ken Griffin and Blackstone president and COO John Gray.
- What
- They gave opposing assessments of whether AI investment is in a bubble.
- When
- Griffin spoke on Oct. 20; Gray gave an interview on Oct. 22. The article was published Oct. 24, 2026.
- Where
- Griffin spoke at Citadel’s Future of Global Markets conference. Gray spoke to CNBC.
- Why
- Griffin cited possible GPU oversupply, uncertainty about chip life spans and doubts that investment will raise productivity. Gray pointed to strong computing demand and limited data center supply.
Ken Griffin
John Gray
AI investment
Ken Griffin
Investors are almost certainly in an AI bubble.
John Gray
AI computing demand remains strong and is still ahead of supply.
Market evidence
Ken Griffin
Griffin raised concerns about GPU supply exceeding demand and whether major spending will improve productivity.
John Gray
Gray cited limited data center supply, rising computing-service prices and data center rents.
Ken Griffin warned of an AI bubble at Citadel’s Future of Global Markets conference.
John Gray told CNBC that computing demand remained strong and data center supply was limited.
Nvidia is scheduled to report earnings, which the article describes as a test of whether AI infrastructure investment is translating into demand and results.
- AI bond issuance
- About $193 billion by early August
- Companies issuing bonds
- Amazon, CoreWeave, Google, Meta, Microsoft and Oracle
- 2024 AI-related bond issuance
- $16.7 billion
- UBS forecast
- $4.1 trillion in AI infrastructure spending by hyperscalers from 2026 to 2028
- CoreWeave-like providers
- Computing-service prices rose 50%, according to Gray
1 source
What people are saying
Investors are almost certainly in an AI bubble.
Computing demand at companies Blackstone has invested in remains strong, and data center supply is limited.