Global stock market cap reaches 137% of GDP, matching 2021 peaks and exceeding 2008 crisis levels, driven by AI enthusiasm.
Macro & Markets ·
Global stock market capitalization has reached 137% of global GDP, approaching historic highs and surpassing valuations that preceded the 2008 financial crisis. The ratio has climbed 40 percentage points since April 2025, matching peak levels recorded during the 2021 period. Total global equity market capitalization has reached $166 trillion, with the US market comprising approximately $77 trillion or 46% of the global total.
The valuation milestone reflects sustained demand across major markets. The magnitude of the increase since spring 2025 indicates rapid accumulation in equity holdings relative to underlying economic output. AI-related investments are cited as a primary driver of the growth.
Whether current valuations can be sustained relative to earnings growth and macroeconomic conditions remains unclear. The comparison to pre-2008 and 2021 levels raises questions about market concentration and underlying fundamentals, though no breakdown of sectoral or geographic risk distribution is available from the available data.