S&P 500 IndexSPXValuation Analysis

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Valuation Snapshot

Based on the blended 10-year P/E and P/B percentiles, this index currently sits in the “Richly Valued” zone.

As of 2026-10-16, S&P 500 Index (SPX) trades at a P/E of 24.70x and a P/B of 5.50x.
Longitudinal percentile comparison: P/E sits at the 53.1th percentile over the trailing 10Y window (vs. 10.88th percentile over 3Y); P/B sits at the 93.36th percentile over the trailing 10Y window (vs. 77.85th percentile over 3Y).
Data refreshes weekly and is for reference only, not investment advice.

Want the full picture on whether S&P 500 Index (SPX) is under- or over-valued? See the full 3Y / 5Y / 10Y / 20Y P/E & P/B percentile matrix and the interactive ECharts trend chart on this page.

P/E PE 24.70
3YCheap
5YFair
10YFair
20YRich
P/B PB 5.50
3YRich
5YRich
10YRich
20YRich

Historical P/E (Weekly)

Historical Percentiles by Metric

Historical P/E and P/B percentile data table for this index
MetricCurrent 3Y Pctl5Y Pctl10Y Pctl20Y Pctl
P/E24.70
10.88%
37.77%
53.10%
75.36%
P/B5.50
77.85%
86.69%
93.36%
96.68%

Frequently Asked Questions

What do P/E and P/B percentiles mean?

A percentile shows where the current valuation sits within its own historical range. For example, a 10-year P/E percentile of 30% means today's P/E is lower than roughly 70% of trading days over the past 10 years — a relatively low position historically. The closer the percentile is to 100%, the higher the current valuation sits relative to its own history.

What's the difference between the 3-year, 5-year, 10-year, and 20-year percentiles?

Longer windows (10Y, 20Y) typically span multiple full market cycles but may include periods that are less representative of current conditions; shorter windows (3Y) track the recent market environment more closely but have a smaller sample size and are more sensitive to short-term swings. It's generally more informative to look at several windows together rather than relying on a single number.

How often is this valuation data updated?

P/E, P/B, and percentile data on this page refresh once per week; see the trading date noted in the "Valuation Snapshot" section above for the exact date.