Which stock market sector has the highest P/E ratio?

As of March 2026, Communication Services has the highest trailing P/E ratio at 37.47, driven by mega-cap platforms like Alphabet and Meta. Information Technology follows at 34.96, and Real Estate is third at 32.72. However, when adjusted for growth (PEG ratio), Technology actually appears more reasonably valued at 1.34 PEG vs Communication Services at 2.44.

Is the tech sector overvalued?

The Information Technology sector trades at a trailing P/E of 34.96 — a 27% premium to its 10-year average of 27.5. However, the sector's PEG ratio of 1.34 (the lowest of all sectors) suggests the elevated P/E is partly justified by exceptional 33% 5-year earnings growth. The forward P/E of 24.96 narrows the gap further. The sector is expensive on an absolute basis but appears reasonably priced when growth-adjusted.

What is the average P/E ratio of the S&P 500?

The S&P 500 trailing P/E ratio is 28.95 as of March 2026. The historical mean P/E is 16.20 and the median is 15.06, meaning the current market trades at roughly 79% above its long-term average. Elevated earnings growth expectations and mega-cap tech concentration contribute to this above-average multiple.

Which sector is the most undervalued?

Real Estate is the only GICS sector trading below its 10-year average P/E, at a 12% discount (32.72 current vs 37.0 historical). Financials offer the lowest absolute P/E at 16.92 and the second-lowest PEG at 1.44. Energy is closest to fair value at only a 7% premium, while Materials has the second-lowest PEG at 1.40 thanks to strong forward growth expectations.

How do you compare sector valuations?

Comparing sector P/E ratios requires context. Key approaches: (1) Compare current P/E to the sector's own 10-year historical average to assess relative premium/discount. (2) Use PEG ratio (P/E divided by earnings growth rate) to adjust for different growth profiles — a PEG below 1.0 suggests undervaluation. (3) Compare trailing vs forward P/E to see if earnings are expected to improve. (4) Consider P/B and P/S ratios for capital-intensive vs asset-light sectors. No single metric tells the full story.

GICS Sector P/E Ratios 2026: Which Sectors Are Overvalued?

Key Findings

10 of 11 sectors trade above their 10-year average P/E. Only Real Estate trades below its historical norm (-12%), pressured by elevated interest rates.

Communication Services is the most stretched at 89% above its 10-year average (37.47 vs 19.8), driven by Alphabet and Meta's dominance and AI-era re-rating.

Financials offer the lowest absolute P/E (16.92) and the second-best growth-adjusted value (PEG 1.44). Technology has the best PEG at 1.34 despite its elevated P/E.

Consumer Staples has the worst PEG ratio (2.95) — investors pay a steep safety premium for single-digit earnings growth. The defensive trade is expensive.

Materials are the stealth performer. Best 1-year return (+45%), lowest PEG alongside Tech (1.40), and forward P/E of just 14.9. Commodity supercycle tailwinds are real.

Methodology

This study analyzes the price-to-earnings ratios of all 11 GICS (Global Industry Classification Standard) sectors as represented in the U.S. equity market.

Current P/E: Trailing twelve-month aggregate earnings, sourced from Finviz sector screener.
Forward P/E: Based on sell-side analyst consensus estimates for the next 12 months.
Historical 10-Year Average: Compiled from S&P Global sector valuation archives and Fidelity research (2016–2025 average).
PEG Ratio: P/E divided by forward 5-year EPS growth estimate — adjusts for growth differences between sectors.
Market Cap Weights: Calculated from aggregate market capitalization of all publicly listed companies in each sector.
Premium/Discount: Percentage difference between current trailing P/E and 10-year historical average P/E.

P/E ratios for different sectors are not directly comparable. Capital-intensive sectors (Utilities, Real Estate) traditionally trade at different multiples than asset-light sectors (Technology, Communication Services). This study provides both absolute and relative-to-history comparisons.

Data refreshed: March 9, 2026.

GICS Sector P/E Ratios 2026

Key Findings

Current P/E vs Historical Average

Premium / Discount vs 10-Year Average

Full Sector Comparison

Frequently Asked Questions

Methodology