Is it really a bubble? A Deep Dive into the AI Boom and Market Valuations
Published: October 29, 2025
The AI boom has sparked a debate: Is it a bubble? Here's a breakdown of the arguments and numbers that fuel this discussion.
The Bubble Dilemma for Fund Managers
Fund managers face a familiar challenge: their clients will ask why they didn't capitalize on sky-high returns. A common reason for not owning a particular asset is that it's in a bubble, and bubbles tend to burst. Interestingly, even those at the heart of the AI boom are now questioning its bubble status.
AI Boom: Bubble or Not?
- Jeff Bezos' Perspective: Bezos believes we're in a "good" type of bubble. (Source: https://www.ft.com/content/8d80f601-4725-489a-8d6e-39099a01f9cb)
- Hemant Taneja's View: Taneja, a backer of Anthropic and CEO of General Catalyst, acknowledges the bubble. (Source: https://www.ft.com/content/59baba74-c039-4fa7-9d63-b14f8b2bb9e2)
- Sam Altman's Take: OpenAI's CEO, Sam Altman, admits that some investors are likely to lose a lot of money. (Source: https://www.ft.com/content/a76f238d-5543-4c01-9419-52aaf352dc23)
Goldman Sachs' Perspective
Goldman Sachs' chief global equity strategist, Peter Oppenheimer, offers a nuanced view: "Not a bubble... yet." (Source: https://www.gspublishing.com/content/research/en/reports/2025/10/08/3da3403c-c6ea-4a66-816f-a70e09afee7c.html)
Analyzing the Numbers
Oppenheimer's analysis focuses on the Mag7 (a group of tech giants) and compares it to past bubbles:
- Price-to-Earnings Ratio: The Mag7 appears less bubbly compared to the 2000 Tech Bubble, 1989 Japanese Bubble, and 1973 Nifty 50 Bubble when considering a 24-month forward P/E ratio.
- Price-to-Book Basis: The technology, media, and telecoms sector is valued higher than the 2000 peak, but trailing return on equity suggests a potential valuation mismatch.
- Market-Implied Dividend Growth: Dividend growth, estimated using a three-stage discount model, is still below tech bubble peaks, though not significantly.
Oppenheimer's Counterargument
Oppenheimer highlights strong return on equity, net income margins, and significant capital expenditure as reasons to believe this time is different. However, Goldman Sachs advises diversifying away from US tech giants, just in case.
The Pricey Party
While Wall Street hasn't called the party over, some market indicators suggest prices might be getting a bit high. (Source: https://www.ft.com/content/ace06a73-36bf-4717-92b4-d5aa0dc42f8b)
The Bottom Line
The debate over whether the AI boom is a bubble continues. While some investors are likely to lose money, the market's current valuation and growth prospects remain a subject of careful analysis and strategic decision-making.
