Phillips 66 operates large, complex refineries that benefit from economies of scale. This allows for efficient processing of crude oil into higher-value refined products.

↑Midstream Infrastructure Network

The company possesses extensive midstream assets, including pipelines and terminals. This integrated network provides logistical advantages and cost control for product distribution.

↑Strategic Location of Assets

Phillips 66's refineries are strategically located to access diverse crude oil sources and serve key demand centers. This geographic advantage optimizes feedstock costs and market reach.

INVESTMENT RISKS

↓Commodity Price Volatility

Refining margins are highly sensitive to fluctuations in crude oil and refined product prices. Geopolitical events, like collapsed peace talks, can exacerbate this volatility.

↓Regulatory and Environmental Pressures

The refining industry faces increasing scrutiny regarding environmental regulations and emissions standards. Compliance can lead to significant capital expenditures and operational changes.

↓Demand Fluctuations

Demand for refined products, particularly gasoline, is tied to economic activity and seasonal trends like peak driving season. Economic downturns or shifts in consumer behavior can impact sales volumes.

Base case

PSX base case PE valuation

A base case PE valuation for PSX estimates a fair value of about $336.59 per share, against a current price of $179.45. The model assumes 20.0% annual earnings growth, a 17x target PE multiple, and a 10% discount rate.

Intrinsic Value

$336.59

Margin of safety

+46.7%

Expected annual return

+13.4%

Base case assumptions: 20.0% annual earnings growth, 17x target PE, 10% discount rate, 5 year projection. Data as of 2026-06-12.

This base case uses default assumptions and is not financial advice. The fair value changes significantly when the target PE or earnings growth rate changes. Open the calculator to set your own assumptions and see the full sensitivity range.

Customize the PSX PE valuation

Adjust the target PE, earnings growth, and discount rate to see how the fair value and margin of safety for Phillips 66 respond.

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Company Overview

Phillips 66 operates as a diversified energy company, specializing in both manufacturing and logistics. Its comprehensive business model is structured across four primary segments: Midstream, Chemicals, Refining, and Marketing & Specialties (M&S). The Midstream division manages the vital infrastructure for transporting and processing various energy commodities. This includes moving crude oil and other feedstocks, delivering refined petroleum products to market, offering terminaling and storage solutions, and handling natural gas liquids (NGLs) through processes like transportation, storage, fractionation, export, and marketing. It also provides fee-based processing services and oversees the gathering, processing, transportation, and marketing of natural gas. The Chemicals segment is dedicated to the production and distribution of a broad spectrum of chemical products. This encompasses olefins like ethylene, aromatics and styrenics such as benzene, cyclohexane, styrene, and polystyrene, alongside various specialty chemicals. These specialty products include organosulfur compounds, solvents, catalysts, and chemicals utilized in drilling and mining operations. Through its Refining segment, Phillips 66 transforms crude oil and other feedstocks into essential petroleum products. These include different grades of gasoline, distillates, aviation fuels, and renewable fuels, processed at its network of 12 refineries located in the United States and Europe. The Marketing & Specialties (M&S) segment focuses on the procurement, resale, and marketing of refined petroleum products like gasolines, distillates, and aviation fuels, primarily serving markets in the United States and Europe. This segment also manufactures and distributes specialized products, including base oils and lubricants. Phillips 66, founded in 1875, is headquartered in Houston, Texas.

Financial Metrics — PSX PE Stock Valuation Data

PE Ratio (TTM)

17.5x

PEG Ratio

0.13

Earnings Yield

5.71%

ROE (TTM)

14.7%

Revenue/Share (TTM)

$337.71

Dividend Yield

2.75%

Debt/Equity

0.95x

Frequently Asked Questions

What is the PE ratio of PSX?

The trailing twelve-month PE ratio of PSX reflects how much investors pay per dollar of Phillips 66's earnings. This metric is most useful when compared to Oil & Gas Refining & Marketing peers and the company's own historical range.

Is PSX overvalued based on PE ratio?

PSX's PE of 17.5x combined with a PEG ratio of 0.13 provides a growth-adjusted perspective. A PEG below 1.0 suggests PSX may be undervalued relative to its earnings growth rate. Keep in mind that PE-based valuation works best for profitable, mature companies — for high-growth or cyclical Oil & Gas Refining & Marketing, a DCF analysis may be more appropriate.

How do I value PSX stock using PE ratio?

To value Phillips 66 using PE: (1) Compare the current PE (17.5x) against the Oil & Gas Refining & Marketing median to assess relative pricing, (2) check the PEG ratio (0.13) to adjust for growth expectations, (3) review the 5-year PE range to identify where the stock sits historically, and (4) estimate fair value by multiplying a target PE by forward EPS estimates. This relative approach complements DCF's absolute valuation.

What is the PEG ratio of PSX?

PSX's PEG ratio is 0.13, calculated by dividing the PE ratio (17.5x) by the expected earnings growth rate. A PEG below 1.0 is traditionally considered a sign of undervaluation — the market may not be fully pricing in the growth potential. Note that PEG accuracy depends on the reliability of growth estimates.

Should I use PE ratio or DCF for PSX stock valuation?

PE ratio gives a quick relative read — how PSX is priced versus Oil & Gas Refining & Marketing peers. DCF provides an absolute value based on projected free cash flows. For the most reliable valuation, use PE as a quick comparability screen and DCF for a deeper fundamental analysis. Each method has blind spots: PE ignores capital structure and cash flow quality, while DCF is sensitive to growth and discount rate assumptions.

Learn More

See PSX DCF Valuation → — Intrinsic value via Discounted Cash Flow analysis
PE Methodology — Step-by-step guide to PE ratio stock valuation
DCF Methodology — Guide to discounted cash flow analysis
PE Ratio — Understanding the price-to-earnings ratio
Intrinsic Value — How to evaluate stock fair value

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P/E and DCF value PSX with different methods and assumptions, so the two conclusions can differ. Compare the DCF intrinsic value.

Price as of 2026-06-12. Financial data from Financial Modeling Prep (trailing twelve months) · Valuation methodology by Charlie Wang.

This is an estimate, not investment advice.