Nominal GDP vs S&P 500
U.S. nominal GDP (FRED series GDP, Bureau of Economic Analysis) ran $31.3 trillion annualized as of the December 31, 2025 print.
Also known as: Nominal GDP (gross domestic product) · S&P 500 ETF (SPY) (ETF_SPY, S&P 500, SPX, SP500)
Why This Comparison Matters
U.S. nominal GDP (FRED series GDP, Bureau of Economic Analysis) ran $31.3 trillion annualized as of the December 31, 2025 print. SPDR S&P 500 ETF (SPY) tracks the cap-weighted S&P 500, with total U.S. equity-market value at $72.1 trillion in late 2025 per Wilshire. The ratio of those two figures is the Buffett Indicator, which printed 230% on December 31, 2025 and 226.9% on April 29, 2026 per Current Market Valuation, the highest sustained reading on record and roughly 2.4 standard deviations above the long-run trend. The pair captures the gap between corporate-claim valuation and underlying real-economy growth, and the gap matters most when it widens through multiple expansion rather than through earnings growth.
What nominal GDP and SPY each represent
The Bureau of Economic Analysis publishes nominal GDP quarterly under the National Income and Product Accounts framework. The advance estimate releases roughly 30 days after quarter-end, with second and third estimates following at one-month intervals. The series available on FRED as GDP is the seasonally adjusted annualized rate in current dollars; for the December 31, 2025 vintage, that figure was approximately $31.3 trillion. SPDR S&P 500 ETF (SPY) holds the 500 large-cap U.S. equities in the index, with $560 billion plus in assets under management and an expense ratio of 0.0945%.
The Wilshire 5000 Total Market Index, used as the numerator in the Buffett Indicator, captures all publicly traded U.S. equity. For the December 31, 2025 print, the Wilshire 5000 was $72.14 trillion. The ratio (Wilshire 5000 / GDP) was 230% per Current Market Valuation. The textbook reference is Warren Buffett's December 2001 Forbes interview where he called the ratio probably the best single measure of where valuations stand at any given moment, with 75 to 90% being reasonable and over 120% suggesting overvaluation.
The current 230% Buffett reading in long-horizon context
The Buffett Indicator hit 230% on December 31, 2025, then 232.6% briefly in early 2026, and 226.9% on April 29, 2026, the highest sustained level in the post-1971 series. Prior peaks: the dot-com bubble peaked at approximately 145% in March 2000; the 2007 cycle peaked at approximately 105%; the post-2020 reflation reached 200% by November 2021 before retracing to 152% in October 2022 during the bear market; the 2024 to 2026 cycle has now extended above 220% for sustained windows. The 2025 peak is roughly 60% above the dot-com peak and roughly 120% above the 2007 peak.
The long-run trend regression (since 1971) sits around 95 to 100%. The 230% reading is approximately 2.4 standard deviations above trend. Historically, readings more than 1.5 standard deviations above trend have produced negative 10-year forward S&P 500 real returns in 7 of 10 instances since 1900 per multiple long-horizon studies (Hussman, Shiller CAPE comparisons). The current 2.4 standard deviation reading has no historical precedent, so forward-return base rates are extrapolated rather than empirical.
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Frequently Asked Questions
What is the Buffett Indicator currently saying?+
The Buffett Indicator (Wilshire 5000 / nominal GDP) printed 230% on December 31, 2025, peaked at 232.6% in early 2026, and stood at 226.9% on April 29, 2026 per Current Market Valuation. This is the highest sustained level in the post-1971 series and roughly 2.4 standard deviations above the long-run trend of 95 to 100%. Warren Buffett's December 2001 Forbes interview called readings over 120% suggestive of overvaluation; the current reading is approximately 100 percentage points above that threshold.
How does this compare to the dot-com peak?+
The dot-com bubble peaked at approximately 145% in March 2000. The 2007 cycle peaked at approximately 105%. The post-2020 reflation reached 200% by November 2021. The 2024 to 2026 cycle has extended above 220% for sustained windows, peaking near 233%. The 2025 to 2026 peak is roughly 60% above the dot-com peak and 120% above the 2007 peak. Forward 10-year S&P 500 real returns following readings more than 1.5 standard deviations above trend have been negative in 7 of 10 historical instances since 1900 per long-horizon studies, but the current 2.4 standard deviation reading has no direct historical precedent.
Why has SPY decoupled from nominal GDP this much?+
Three structural drivers. First, corporate profit share of GDP rose from 6 to 8% in the 1980s to 12 to 14% in 2024 to 2026 per BEA NIPA Table 1.10. Higher profit share means each dollar of GDP supports more equity-market value than in prior eras. Second, S&P 500 firms derive roughly 40% of revenue from international markets per FactSet, so global GDP is the relevant denominator for that portion. Third, the post-2008 era has compressed real interest rates structurally, with DFII10 averaging 50bp in 2010 to 2021 versus 200 to 300bp in 1980 to 2007, supporting higher multiples through the discount-rate channel.
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Data sourced from FRED, CoinGecko, CBOE, and other providers. This page is for informational purposes only and does not constitute financial advice. Past performance does not guarantee future results.