Is the Stock Market Overvalued?
A data-driven answer — what 'overvalued' really means, the gauges that measure it, where markets stand now, and what high valuations have meant for future returns.
By most long-run measures, the world's largest stock markets — and the United States in particular — look historically expensive in 2026. But "overvalued" is not a yes-or-no verdict that tells you to sell tomorrow. It is a statement about price relative to fundamentals and relative to a market's own history, and it speaks mainly to long-run expected returns, not next month's price.
This post explains what the word actually means, which gauges measure it, where things stand today, and — the part that matters most — what a high starting valuation has historically meant for the returns that followed.
What "overvalued" actually means
A stock market is "overvalued" when its price sits high relative to the profits, assets, sales and economic output that ultimately back it — and high relative to its own past. There is no official threshold. Instead, analysts take a valuation ratio and ask one question: where does today sit within decades of this market's own history?
That history is usually expressed as a percentile. A reading in the 95th percentile means the market has been more expensive than it is now only about 5% of the time. That is what people mean by "overvalued" — not a fixed line in the sand, but an extreme relative to history. (For more on reading these, see how to read valuation percentiles.)
The gauges that measure it
No single number settles the question, so it helps to look at several independent gauges, each measured against its own record:
| Gauge | What it compares | "Expensive" when… |
|---|---|---|
| CAPE ratio | Price vs 10-year average real earnings | High, vs its own history |
| Trailing P/E | Price vs last year's earnings | High |
| Buffett Indicator | Total market value vs GDP | High |
| Price-to-book | Price vs net assets | High |
| Price-to-sales | Price vs revenue | High |
| Dividend yield | Income vs price | Low (it reads inversely) |
The CAPE ratio is the most widely cited because smoothing earnings over ten years strips out the boom-and-bust swings that make a simple P/E jump around. But the strongest read comes from looking at all of them together — which is why the US valuation dashboard puts six gauges side by side on one cheap-to-expensive scale.
Where the market stands today (June 2026)
As of mid-2026, the picture is consistent across measures:
- The Global CAPE sits around 29 — near the 97th percentile of its long history. The world as a whole has rarely been valued this richly.
- The whole-world trailing P/E is roughly 23, with a dividend yield near 1.6% — both toward the expensive end of the range.
- The United States is the most expensive major market by a wide margin, sitting in the top few percent of its own history on nearly every gauge, with the Buffett Indicator well above 200% of GDP. (More on this in is the S&P 500 overvalued?)
- The rest of the world is noticeably cheaper — much of Europe, the UK, China and other emerging markets trade at far lower multiples. You can see every market ranked, cheapest to dearest, on the country comparison. (For one example, see is the UK stock market cheap?)
These figures move every day, so treat them as a snapshot. The global dashboard and US dashboard always show the current readings.
What "overvalued" has meant for returns
Here is why valuation is worth tracking at all: historically, the higher a market's starting CAPE, the lower its subsequent long-run return — and the lower the CAPE, the higher the return. Buy when valuations are stretched and you have, on average, earned less over the following decade.
It is a loose relationship, not a crystal ball. Across history it explains only about a quarter of the variation in 10-year returns, so any single estimate comes with a wide band of plausible outcomes. At today's global valuation, that relationship points to roughly 2% a year in real (after-inflation) terms over the next decade — meaningfully below the long-run average, but with enough spread that the actual result could land well above or below it. You can explore the full model, and the uncertainty around it, on the expected returns page.
One caveat matters more than any other: valuation is a poor short-term timing tool. Expensive markets routinely get more expensive for years before they correct — the late-1990s ran from "expensive" to "extreme" long before the reversal arrived. A high valuation lowers the odds and the expected size of future gains; it does not mark a crash date. (We dig into this further in does CAPE predict returns?.)
So should you do anything?
This is general information, not financial advice. But it is worth being clear about what valuation is and isn't good for.
Useful for: setting realistic long-run return expectations, deciding how much to lean toward cheaper regions versus the expensive US, and keeping a rebalancing discipline. If your plan quietly assumes 7% real returns from a market priced for 2%, that is worth knowing now rather than in ten years.
Not useful for: market timing. The weight of the evidence favours staying invested and diversified over trying to jump in and out on a valuation signal. "Overvalued" is a reason to check your assumptions and your geographic mix — not a reason to panic.
Check the live numbers
Valuations change constantly, so the most useful thing you can do is look at where they sit today:
- Is the world stock market expensive? — the Global CAPE and whole-world multiples, against decades of history.
- US stock market valuation — six gauges for the most expensive major market.
- Cheapest stock markets in the world — every market ranked, cheapest to dearest.
- Expected returns — what today's valuation has historically implied for the next decade.