Current and forward price-to-earnings multiples across all 11 GICS sectors. A data-driven snapshot of market expectations.
Trailing vs. Forward P/E Ratios across the S&P 500
| Sector | Trailing P/E | Forward P/E | 10Y Average P/E | Premium/Discount |
|---|
This page analyzes the price-to-earnings (P/E) ratios of the 11 Global Industry Classification Standard (GICS) sectors comprising the S&P 500. Data is extracted using the yahoo-finance2 API for standard State Street SPDR Sector ETFs (XLK, XLV, XLF, etc.) and the SPDR S&P 500 ETF Trust (SPY) as the market baseline.
Trailing P/E represents the current multiple based on the past 12 months of actual earnings. Forward P/E is calculated independently by aggregating the forward P/E estimates of the top 10 holdings within each respective sector ETF and computing a market-cap weighted average. This provides a clean proxy for expected forward valuation without relying on opaque index-level estimates.
Note on Missing Data (Null values): In alignment with strict quantitative data standards, missing metrics such as definitive 10-year historical average P/E ratios and corresponding premiums/discounts are marked as "null" (N/A). We prioritize null over fake data; we never fabricate or interpolate historical valuations when precise programmatic extraction is unavailable.
The P/E ratio varies widely across the 11 GICS sectors. Technology and Consumer Discretionary typically trade at higher P/E multiples (often 25-35x), reflecting higher growth expectations. Conversely, Financials and Energy usually trade at lower multiples (often 10-15x).
Historically, the Information Technology, Real Estate, and Consumer Discretionary sectors trade at the highest P/E ratios due to high growth expectations or specific accounting practices (like depreciation in Real Estate that lowers standard earnings metrics).
A "good" P/E ratio is relative to the sector's historical average and its growth rate. For example, a 15x P/E might be expensive for a bank but very cheap for a software company. Investors often use the PEG ratio (Price/Earnings-to-Growth) to normalize valuations across differently priced sectors.
Energy and Financials typically have low P/E ratios because they are cyclical businesses with lower long-term secular growth rates compared to tech. Their earnings can fluctuate wildly with commodity prices or interest rates, so investors refuse to pay a high multiple for those unpredictable earnings.
Trailing P/E uses actual earnings from the past 12 months. Forward P/E uses estimated earnings for the next 12 months. Forward P/E is more relevant for valuing a stock's future, but it relies on analyst estimates which can be inaccurate during economic turning points.
Westmount Fundamentals. "P/E Ratio by Sector: S&P 500 Valuations 2026." westmountfundamentals.com/pe-ratio-by-sector-2026, 2026.