Last updated: June 2026
By almost every major valuation metric, the S&P 500 is expensive right now — not just «a little above average» expensive, but historically expensive, in the same territory the index has only visited a handful of times in over a century of data. That doesn’t necessarily mean a crash is coming. It does mean the conversation about valuation has shifted from background noise to something worth actually understanding before you put new money to work.
This article walks through what the numbers actually show, what that has historically meant for forward returns, and which ETFs investors are using in 2026 to manage that risk without abandoning equities altogether.
Disclaimer: This article is for informational and educational purposes only and does not constitute financial advice. Valuation metrics are not reliable market-timing tools, and elevated valuations can persist for years before any correction occurs — or may not correct at all. Always do your own research and consider speaking with a licensed financial advisor before making investment decisions.
What the valuation metrics actually show
The Shiller CAPE ratio
The Shiller CAPE ratio (cyclically adjusted price-to-earnings, which smooths out 10 years of inflation-adjusted earnings to reduce business-cycle noise) sat at roughly 40.4 as of June 2026, according to GuruFocus — about 25.5% above its long-term average of 32.22 in modern-era terms. Other sources tracking the metric put the May 2026 reading closer to 41.6, more than double the long-run historical average of roughly 17.3, and note that this is the second-highest CAPE reading in over 140 years of U.S. market history — surpassed only by the December 1999 dot-com peak of 44.19.
That historical context matters. According to research on the CAPE ratio’s predictive track record, when the CAPE has been below 9.6, the following 10 years delivered average real returns of about 9.8% annually. When the CAPE has been above 25, forward 10-year real returns have averaged in the low single digits or worse. The relationship isn’t perfectly deterministic — individual 10-year windows have produced a wide range of outcomes even from similarly elevated starting points — but the central tendency is clear: starting valuation matters for long-run returns.
Standard P/E ratio
By a separate measure, CurrentMarketValuation.com found the S&P 500’s 10-year P/E ratio at 36.4 as of March 2026 — 76% above its modern-era average of 20.7, or about 1.9 standard deviations above the norm, which the site’s own ratings classify as «Overvalued.»
The Buffett Indicator
A third lens — the ratio of total U.S. stock market value to GDP, popularized by Warren Buffett — corroborates the same picture. When this measure stretches significantly past its historical trendline (often cited as exceeding 150-200%), it has historically reinforced warning signs already flashing from P/E-based metrics.
Forward P/E and the interest rate context
Goldman Sachs noted in January 2026 that the S&P 500’s roughly 22x forward P/E ratio matches the peak multiple last seen in 2021 — a data point worth watching, though not viewed by Goldman as a standalone sell signal. Context matters here too: when 10-year Treasury yields sat at 1-2% in 2020-2021, a P/E of 25-30x was easier to justify because safe-asset returns were minimal. With 10-year yields running at 4.5-5% in early 2026, the same valuation multiple is more expensive in opportunity-cost terms — investors now have a genuine, lower-risk alternative in bonds that didn’t meaningfully exist a few years ago.
The case for «this time it’s different»
Valuation bulls have real arguments, not just wishful thinking. Many point to a combination of factors: continued AI-driven earnings growth, U.S. corporate dominance in the industries reshaping the global economy, and a structurally different competitive landscape than prior market cycles. Goldman Sachs has projected a 12% EPS increase for the S&P 500 in 2026 and a further 10% increase in 2027 — growth that, if realized, would help justify at least part of today’s elevated multiple.
It’s worth noting, though, that analysts’ initial full-year EPS estimates have historically been revised down by an average of 5-15% by year-end. A forward P/E that looks like 21.5x based on optimistic earnings estimates can effectively become closer to 24x if actual earnings come in lower than projected — a detail that should temper how much weight any single forward-looking estimate deserves.
What elevated valuations mean (and don’t mean) for your portfolio
It’s worth being precise here, because «overvalued» gets misused constantly in financial media. A high CAPE or P/E ratio:
- Does not reliably predict near-term crashes. The S&P 500 has traded at elevated multiples before and continued climbing for extended periods — sometimes years — before any correction occurred.
- Has historically correlated with lower 10-year forward returns, on average, even though individual outcomes vary widely.
- Is one input, not a standalone verdict. Valuation experts generally recommend weighing CAPE alongside other measures — earnings growth trajectory, interest rate environment, and sector concentration — rather than treating any single number as a trading signal.
The concentration problem hiding inside the index
There’s a second, less-discussed dimension to the «is the S&P 500 overvalued» question: the index isn’t as diversified as its 500-stock name implies. A relatively small number of mega-cap technology companies now account for an outsized share of both the index’s value and its volatility. Industry analysts have noted that in the first quarter of 2026, the top 10 names in the S&P 500 drove over 50% of the index’s volatility, as measured by standard deviation — up from less than a quarter of the index’s volatility before COVID-19. In practical terms, a «diversified» S&P 500 index fund today behaves a lot more like a concentrated bet on a handful of companies than its branding suggests.
This concentration angle has become directly relevant in 2026: SPY, the standard cap-weighted S&P 500 ETF, was down roughly 3-4% year-to-date at points in early 2026, while several alternative-structure ETFs covered below outperformed it meaningfully over the same stretch — a live illustration of what concentration risk can look like when mega-cap names cool off. (If you want to understand how SPY’s specific structure handles these shifts compared to its core rivals, see our definitive VOO vs SPY vs IVV updated comparison for 2026 to analyze their inner mechanics).
ETFs to consider if you’re managing valuation risk
None of the following are a «bet against the market» — they’re ways to stay invested in equities while reducing reliance on the same handful of expensive mega-cap names driving the headline S&P 500 valuation.
Equal-weight S&P 500 ETFs (RSP)
The Invesco S&P 500 Equal Weight ETF (RSP) holds the same 500 companies as a standard S&P 500 fund, but allocates roughly the same weight to each one — about 0.2% per holding — rather than letting market cap determine the allocation. This structurally reduces exposure to the mega-cap names carrying the most stretched valuations. RSP charges a 0.20% expense ratio, notably higher than VOO or IVV’s 0.03%, but in 2026’s environment of fading mega-cap dominance, several equal-weight funds outperformed the standard cap-weighted index. Industry coverage from 24/7 Wall St. found that as SPY declined roughly 3-4% year-to-date, equal-weight alternatives held up meaningfully better over the same stretch — direct evidence of what reduced concentration can do when the largest names cool off.
International ETFs (VXUS)
The Vanguard Total International Stock ETF (VXUS) holds roughly 8,700-8,800 stocks across developed and emerging markets outside the U.S., charges a 0.05% expense ratio, and manages well over $130 billion in assets. The valuation case is straightforward: VXUS trades at a P/E ratio of roughly 17, which The Motley Fool’s analysis pegs at about 40% cheaper than the S&P 500. In 2026, that valuation gap started translating into real performance — VXUS posted its first meaningful year-to-date lead over the S&P 500 since 2021, helped by a softer U.S. dollar and lower exposure to the concentrated U.S. tech sector. Over longer horizons, though, the picture is more mixed: VXUS’s 5-year cumulative return of roughly 51% still trails the S&P 500’s roughly 85% over the same stretch, a reminder that 2026’s outperformance is a recent development, not an established long-term trend.
Value ETFs (VTV)
The Vanguard Value ETF (VTV) is the largest value-focused ETF in the world, with over $227 billion in net assets and a 0.03% expense ratio. Rather than concentrating in mega-cap tech, VTV’s largest sector weightings sit in financials, industrials, and healthcare — sectors that together make up roughly 53% of the fund. This gives investors equity exposure with meaningfully less reliance on the same handful of richly-valued technology names driving the broader index’s elevated multiple.
Quick comparison
| ETF | Approach | Expense Ratio | AUM | Why it matters here |
|---|---|---|---|---|
| RSP (Invesco S&P 500 Equal Weight) | Equal-weights all 500 S&P companies | 0.20% | Large, liquid | Reduces mega-cap concentration directly within the S&P 500 |
| VXUS (Vanguard Total International) | ~8,700 stocks outside the U.S. | 0.05% | ~$137B+ | Roughly 40% cheaper valuation than the S&P 500 |
| VTV (Vanguard Value) | Large-cap value, tilted away from tech | 0.03% | ~$227B | Heavier weighting in financials, industrials, healthcare |
Figures as of 2026, sourced from fund providers and financial publications. These numbers change regularly — always check current data before investing.
So, should you sell everything and move to cash?
No source cited in this article — and no credible financial analyst — is making that argument, and you should be skeptical of anyone who does. Valuation metrics have a poor track record as short-term timing tools. Investors who exited the market every time the CAPE ratio crossed above 20 would have missed enormous subsequent gains, including much of the bull run that’s brought valuations to today’s elevated levels.
What elevated valuations more reasonably suggest is that this may be a sensible time to revisit concentration risk specifically — how much of your portfolio depends on the same five or six mega-cap names — rather than to time an exit from equities altogether. Diversifying across equal-weight, international, and value exposure are tools many investors use to manage that specific risk while staying invested.
Frequently asked questions
Does a high CAPE ratio mean a crash is coming? Not reliably. High CAPE readings have historically correlated with lower average returns over the following decade, but they have a poor record predicting the timing of any near-term correction. Markets have traded at elevated valuations for extended periods — sometimes years — without correcting.
Is it better to hold cash than invest at current valuations? This is a deeply personal decision that depends on your time horizon, risk tolerance, and overall financial plan — not something a general valuation metric can answer for you. It’s worth discussing with a licensed financial advisor rather than basing a major allocation decision on a single data point.
What’s the difference between RSP and VOO if they hold the same stocks? The stocks are identical, but the weighting isn’t. VOO weights each company by market capitalization, meaning the largest companies dominate returns. RSP gives every company in the index roughly the same weight, which reduces the influence of mega-cap names and increases the relative influence of smaller S&P 500 constituents.