IT’S PROBABLY A BUBBLE, BUT THERE IS PLENTY E...

In GMO’s Quarterly Letter, Ben Inker offers agnostic investors a guide to navigating the AI boom—bubble or not—based on a taxonomy of 21st-century bubbles and plenty of risk assets to choose from.

The Week in Markets

AI 'bubble' debate fuels volatility after Nvidia’s blockbuster results

AI-led turbulence returned this week even as Nvidia delivered another blockbuster quarter, with revenue up 62% to $57bn and net income rising 65% to $31.9bn. The stock initially jumped more than 5% before reversing, helping drive the Nasdaq’s 2.2% intraday swing — its most volatile session since April. Nvidia used its call to rebut bubble fears, citing structural drivers of compute demand across generative and agentic AI.

GMO published a note suggesting there is a bubble, observing rising AI-capex intensity is reshaping equity leadership but warned that stretched expectations raise sensitivity to any slowdown. It said the current environment offers investors to access excellent risk/reward in non-AI assets (see chart).

Meanwhile, AXA Investment Managers said today’s conditions show risks reminiscent of early dotcom dynamics, though valuations for leading AI firms remain far below bubble levels.

Latest Outlooks

Investment Outlook 2026: Fuel in the engine

Explore our Investment Outlook, with insights on what you need to know about global markets and economies.

Global Investment Outlook: 2026 and beyond

Looking ahead to 2026, Franklin Templeton Institute sees broadening opportunities across global capital markets, with emerging debt and equity markets, European equities, and US smaller-cap stocks...

The Big Picture: Global asset allocation 2026 outlook

We expect the global economy to accelerate during 2026. Coupled with Fed easing and a weaker dollar, we expect this to favour cyclical assets.

2026 Fixed income Outlook: Seizing opportunities in a rate-cutting cycle

Fixed-income investors face falling rates, tight spreads and a fragile labour market. The playbook requires locking in yield and managing duration, while staying vigilant on credit quality.

Long-Term Capital Market Assumptions

The 30th annual edition explores how rising economic nationalism and fiscal activism create both challenges and silver linings for investors. Technology adoption will provide a near-term boost to p...

Capital Market Assumptions

Why a new economic regime calls for a reassessment of risk and rewards

PNC Healthcare: Capital Markets Update - September 2025

Explore market data and capital markets trends for nonprofit healthcare providers as the economic backdrop and interest rate outlook evolves.

00

investment research docs

00

AM firms

To be a Contributor

Contact Us