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Phillips 66XSWX:PSX +1.73%61 Shiller PE Ratio is 22.81 as of Aug. 18, 2026, which is 69% above its 10-year median of 13.51. GuruFocus rates XSWX:PSX with a GF Score™ of 61/100 and a GF Value™ of CHF123.30. The stock has 8 warning signs investors should review. Among 439 Oil & Gas companies, Phillips 66 ranks worse than 64.24% on this metric.
As of today (2026-08-18), Phillips 66's current share price is CHF192.08. Phillips 66's E10 for the quarter that ended in Jun. 2026 was CHF8.42. Phillips 66's Shiller PE Ratio for today is 22.81.
The historical rank and industry rank for Phillips 66's Shiller PE Ratio or its related term are showing as below:
XSWX:PSX'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 7.09 Med: 13.51 Max: 23.82
Current: 23.82
During the past years, Phillips 66's highest Shiller PE Ratio was 23.82. The lowest was 7.09. And the median was 13.51.
XSWX:PSX's Shiller PE Ratio is ranked worse than 64.24% of 439
companies
in the Oil & Gas industry
Industry Median: 17.77
vs XSWX:PSX: 23.82
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Phillips 66's adjusted earnings per share data for the three months ended in Jun. 2026 was CHF7.633. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is CHF8.42 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Phillips 66 (XSWX:PSX) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Phillips 66 Shiller PE Ratio Related Terms
Phillips 66 Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Phillips 66's Shiller PE Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
XSWX:PSX vs VLO, MPC, DINO: Shiller PE Ratio Comparison
For the Oil & Gas Refining & Marketing subindustry, Phillips 66's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Phillips 66 Shiller PE Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Phillips 66's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Phillips 66's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Phillips 66's Shiller PE Ratio for today is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Phillips 66's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Phillips 66's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Phillips 66 (XSWX:PSX) has a Shiller PE Ratio of 22.81 as of Aug. 18, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Phillips 66 and its competitors. This is 69% above median its historical median of 13.51. Over the past decade, Phillips 66's Shiller PE Ratio has ranged from 7.09 to 23.82. According to the industry distribution chart, Phillips 66 ranks #282 out of 439 companies in the Oil & Gas industry, placing it in the top 64.2%.
Is Phillips 66's Shiller PE Ratio too high?
Phillips 66's current Shiller PE Ratio of 22.81 is 69% above median its 10-year median of 13.51. Over the past 10 years, this metric has ranged from a low of 7.09 to a high of 23.82. The Oil & Gas industry median Shiller PE Ratio is 17.77. Phillips 66's value of 22.81 is 28.4% above this industry median. Based on the distribution chart, Phillips 66 ranks #282 out of 439 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Phillips 66 has a GF Score™ of 61/100, reflecting its overall financial health beyond just this single metric.
How does Phillips 66's Shiller PE Ratio compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Phillips 66 ranks #282 out of 439 companies for Shiller PE Ratio. This places Phillips 66 in the lower half of its industry. The industry median Shiller PE Ratio is 17.77. Phillips 66's value of 22.81 is 28.4% above this benchmark. Historically, Phillips 66's own Shiller PE Ratio has ranged from 7.09 to 23.82 over the past decade. While the company's 10-year median is 13.51 vs. the industry median of 17.77, Phillips 66 has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for an Oil & Gas company?
The median Shiller PE Ratio among Oil & Gas companies is 17.77, based on 439 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Phillips 66's current Shiller PE Ratio of 22.81 is 28.4% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Phillips 66 and its competitors. For the Oil & Gas industry, the median Shiller PE Ratio is 17.77 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Phillips 66's current Shiller PE Ratio is 22.81, which is 69% above median its own 10-year median of 13.51. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Phillips 66 stock overvalued right now?
Phillips 66 (XSWX:PSX) has a current Shiller PE Ratio of 22.81. The stock's GF Value™ is CHF123.30, compared to a current price of CHF192.08 — trading 55.8% above its estimated fair value. The current Shiller PE Ratio is 22.81, which is 69% above median its 10-year median of 13.51 and 28.4% above the Oil & Gas industry median of 17.77. Phillips 66's overall GF Score™ is 61/100 with 8 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Phillips 66 (XSWX:PSX), the current Shiller PE Ratio is 22.81 as of Aug. 18, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Phillips 66 (XSWX:PSX) Overvalued in 2026?
Based on GuruFocus' analysis, Phillips 66 stock appears to be overvalued.
The current stock price of CHF192.08 is trading 55.8% above its estimated GF Value™ of CHF123.30.
Key valuation signals for XSWX:PSX:
Shiller PE Ratio: 22.81 (69% above median its 10-year median of 13.51)
GF Value™: CHF123.30 vs. price of CHF192.08 (55.8% above fair value)
Industry Position: 28.4% above the Oil & Gas median (#282 of 439)
No single metric tells the full story. See the XSWX:PSX stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Phillips 66 is an independent refiner that owns or holds interest in 10 refineries with a total crude throughput capacity of 2.0 million barrels per day, or mmb/d, at the end of 2025. The midstream segment comprises extensive transportation and NGL processing assets. It includes 70,000 miles of crude oil, refined petroleum product, NGL and natural gas pipeline systems, and a comprehensive set of refined petroleum product, NGL and crude oil terminals, gathering and processing plants and fractionation facilities and various other storage and loading facilities. Its CPChem chemical joint venture operates facilities primarily in the United States and the Middle East and produces olefins and polyolefins.
61GF Score
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