• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
AI

Apollo’s chief economist warns the AI bubble is even worse than the 1999 dot-com bubble

By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
By
Chris Morris
Chris Morris
Former Contributing Writer
Down Arrow Button Icon
July 17, 2025, 11:46 AM ET
Apollo Global Management chief economist Torsten Sløk
Torsten Sløk, chief economist of Apollo Management, during the Market Forum: FX in Focus event in New York, US, on Thursday, Sept. 7, 2023.Victor J. Blue / Bloomberg—Getty Images
  • Torsten Sløk, chief economist at Apollo Global Management, warns AI stocks are even more over-valued than dot-com stocks were in 1999. In an research note, he illustrated how shares of Nvidia, Microsoft and eight other companies are creating an even bigger bubble than we saw during the dot-com era. And that could cause serious market damage if and when it pops.

While there’s plenty of skepticism about artificial intelligence, the chief economist at Apollo Global Management is warning that the technology is so overblown it risks crashing the market worse than the dot-com bubble burst of 1999.

Torsten Sløk, in a recent research note, wrote “The difference between the IT bubble in the 1990s and the AI bubble today is that the top 10 companies in the S&P 500 today are more overvalued than they were in the 1990s.”

Put another way: Investors are betting so heavily on AI that the stock price of companies like Nvidia, Microsoft, Apple and others have become detached from their earnings. A chart Sløk included compared the 12-month forward price-to-earnings (P/E) ratios of the S&P’s top 10 companies to the rest of the index and the S&P 500 as a whole. And today’s bubble is even bigger than the one that marked the end of the dot-com era.

While the S&P has hit new records recently and is currently near an all-time high, Sløk argues the performance boost is due to the rise of the Top 10 stocks. Investors, he worries, are buying the hype and paying prices as if the promises and boasts of these firms (such as trillion-dollar savings and world-changing breakthroughs) are a certainty. The 1990s were a lesson that not every promise would or could become reality.

And even though many of those top companies are profitable, compared to the losses of many dot-com darlings, the fundamentals don’t justify the multiples.

Sløk has sounded other warnings about the economy. In June, he said he believed the U.S. was at a critical inflection point for stagflation, where the economy continues to grow, but inflation remains high. He blamed tariffs for that possibility.

Sløk’s not alone. Alibaba Group Chair Joe Tsai has warned U.S. AI stocks are in a bubble, as has longtime tech exec Tom Siebel.

In 2001, Fortune first convened “The Smartest People We Know,” bringing together CEOs and founders, builders and investors, thinkers and doers. Since then, Fortune Brainstorm Tech has been the place where bold ideas collide. From June 8–10, we will return to Aspen—where it all began—to mark 25 years of Brainstorm. Register now.
About the Author
By Chris MorrisFormer Contributing Writer

Chris Morris is a former contributing writer at Fortune, covering everything from general business news to the video game and theme park industries.

See full bioRight Arrow Button Icon

Latest in AI

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in AI

Jeremy Renner
AIHealth
Exclusive: Jeremy Renner bets on the tech that could have saved his life faster: ‘There’s 150 people that are responsible for me not dying’
By Catherina GioinoApril 15, 2026
2 hours ago
The hidden menace behind Big Tech’s AI arms race: Meta, Amazon and others are spending billions on hardware that’s worthless in 3 years
AIFinance
The hidden menace behind Big Tech’s AI arms race: Meta, Amazon and others are spending billions on hardware that’s worthless in 3 years
By Shawn TullyApril 15, 2026
4 hours ago
The billionaire Anthropic cofounder who majored in literature says knowing how to ask the right questions beats knowing how to code
SuccessTech
The billionaire Anthropic cofounder who majored in literature says knowing how to ask the right questions beats knowing how to code
By Marco Quiroz-GutierrezApril 14, 2026
14 hours ago
TOKYO, JAPAN - FEBRUARY 3: Open AI CEO Sam Altman speaks during a talk session with SoftBank Group CEO Masayoshi Son at an event titled "Transforming Business through AI" in Tokyo, Japan, on February 03, 2025. SoftBank and OpenAI announced that they have agreed a partnership to set up a joint venture for artificial intelligence services in Japan today. (Photo by Tomohiro Oh
CybersecuritySam Altman
From Molotov cocktails to data center shutdowns, the AI backlash is turning revolutionary
By Eva RoytburgApril 14, 2026
15 hours ago
Dow COO Karen Carter wearing a white lab coat and sitting while smiling
C-SuiteNext to Lead
Dow’s CEO pick elevates a seasoned insider at a pivotal moment for the chemical giant
By Ruth UmohApril 14, 2026
17 hours ago
Anthropic’s Mythos reveals a growing security gap: AI finds flaws far faster than companies can patch them
AIEye on AI
Anthropic’s Mythos reveals a growing security gap: AI finds flaws far faster than companies can patch them
By Sharon GoldmanApril 14, 2026
17 hours ago

Most Popular

Billionaire philanthropist MacKenzie Scott has donated again—a week after gifting millions to a college, she's just given $70 million to Meals on Wheels America
Success
Billionaire philanthropist MacKenzie Scott has donated again—a week after gifting millions to a college, she's just given $70 million to Meals on Wheels America
By Fortune EditorsApril 13, 2026
2 days ago
Retirees are facing a $345,000 bill they never saw coming — and most aren't prepared
Commentary
Retirees are facing a $345,000 bill they never saw coming — and most aren't prepared
By Fortune EditorsApril 14, 2026
1 day ago
He was coding at 12 like Elon Musk and became one of Google’s youngest-ever CMOs—but now says Gen Z is better off ice skating than learning to code
Success
He was coding at 12 like Elon Musk and became one of Google’s youngest-ever CMOs—but now says Gen Z is better off ice skating than learning to code
By Fortune EditorsApril 14, 2026
1 day ago
Anthropic is facing a wave of user backlash over reports of performance issues with its Claude AI chatbot
AI
Anthropic is facing a wave of user backlash over reports of performance issues with its Claude AI chatbot
By Fortune EditorsApril 14, 2026
1 day ago
Current price of oil as of April 14, 2026
Personal Finance
Current price of oil as of April 14, 2026
By Fortune EditorsApril 14, 2026
23 hours ago
Current price of gold as of April 13, 2026
Personal Finance
Current price of gold as of April 13, 2026
By Fortune EditorsApril 13, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.