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Phillips 66 (PSX): Reassessing Valuation After Q3 Earnings Beat and Strong Refining Performance

Simply Wall St · 2d ago

Phillips 66 (PSX) is back in focus after its third quarter numbers topped revenue and earnings expectations, supported by stronger refining margins and record performance in key refining and midstream operations.

See our latest analysis for Phillips 66.

The upbeat Q3 surprise helped extend Phillips 66’s positive trend, with a roughly 20% year to date share price return and a 5 year total shareholder return above 140 percent, suggesting momentum is still broadly intact.

If this refining driven story has caught your eye, it could be worth scanning aerospace and defense stocks for other established players navigating shifting macro and energy linked demand cycles.

Yet with shares already up strongly over three and five years, and analysts still seeing upside from today’s price, is Phillips 66 trading at a discount to its true cash flow power, or is the market already pricing in the next leg of growth?

Most Popular Narrative: 48.8% Undervalued

Compared to the last close of $137.57, the narrative fair value of $268.71 implies that Phillips 66 could be significantly mispriced by the market.

Growth Initiatives: Strategic investments in growth areas such as chemical manufacturing, midstream expansions, or renewable energy can positively impact future profitability. Analysts might point out these efforts as indicators of potential margin expansion.

Read the complete narrative.

To see how modest top line assumptions still lead to a striking upside case, supported by leaner margins and a richer future earnings multiple, read on.

Result: Fair Value of $268.71 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, weaker refining margins or prolonged energy demand softness could quickly compress cash flow, challenging the upbeat valuation and delaying any re-rating toward fair value.

Find out about the key risks to this Phillips 66 narrative.

Another View: Rich On Earnings

Looked at through its price to earnings ratio, Phillips 66 screens very differently. The shares trade on 37 times earnings, well above the US Oil and Gas industry at 13.6 times, peers at 26.6 times, and even our fair ratio of 25.1 times. This points to valuation risk if sentiment cools.

See what the numbers say about this price — find out in our valuation breakdown.

NYSE:PSX PE Ratio as at Dec 2025
NYSE:PSX PE Ratio as at Dec 2025

Build Your Own Phillips 66 Narrative

If you see the story differently, or want to dig into the numbers yourself, you can build a custom view in just minutes: Do it your way

A great starting point for your Phillips 66 research is our analysis highlighting 2 key rewards and 4 important warning signs that could impact your investment decision.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.