Entering the Superbubble’s Final Act

GMO

Research

6 Pages

GMO argues today’s market resembles a late stage superbubble, where a bear market rally can be a dangerous head fake. Grantham notes prior superbubbles often saw rallies that recovered over half the initial drop before the economy rolled over. The paper blends valuation, macro shocks, and longer run resource and climate constraints to suggest the next act could be rougher than investors assume.

Date published: August 31, 2022

Key Takeaways

Superbubble playbook: Lays out a common path from overvaluation to relief rally, then deeper declines as fundamentals deteriorate.
Bear rally trap: Warns rebounds can feel convincing, yet often occur before the economy clearly weakens.
Cross asset stress: Emphasizes that expensive stocks, bonds, and housing can become correlated when inflation and policy tighten together.

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