Sifting through countless of stocks in the Oil, Gas & Consumable Fuels industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Phillips 66 or Valero Energy Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Phillips 66 and Valero Energy Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Phillips 66 and Valero Energy Corporation

Phillips 66 operates as an integrated downstream energy provider in the United States, the United Kingdom, Germany, and internationally. It operates through five segments: Midstream, Chemicals, Refining, Marketing and Specialties (M&S), and Renewable Fuels. The Midstream segment provides crude oil and refined petroleum product transportation, terminaling, and storage services, as well as natural gas and natural gas liquids (NGL) gathering, processing, transportation, fractionation, storage and marketing services. It also exports liquefied petroleum gas. The Chemicals segment produces and markets ethylene and other olefin products; aromatics and styrenics products, such as benzene, cyclohexane, styrene, and polystyrene; various specialty chemical products, including organosulfur chemicals, solvents, catalysts, and chemicals used in drilling and mining; and petrochemicals and plastics. The Refining segment refines crude oil and other feedstocks into petroleum products, such as gasolines and distillates, including aviation fuels. The M&S segment purchases for resale and markets refined products, including gasolines, distillates, and aviation fuels. This segment also manufactures and markets specialty products, such as automotive, commercial, industrial, and specialty lubricants, as well as base oils. The Renewable Fuels segment processes renewable feedstocks into renewable products, as well as supplies sustainable aviation fuel. This segment also procures renewable feedstocks, manages certain regulatory credits, and markets renewable diesel, renewable jet fuel, and other renewable fuels. The company markets its products under the Phillips 66, Conoco and 76, JET, Kendall, Red Line, and other private label brands. Phillips 66 was founded in 1875 and is headquartered in Houston, Texas.

Valero Energy Corporation manufactures, markets, and sells petroleum-based and low-carbon liquid transportation fuels and petrochemical products in the United States, Canada, the United Kingdom, Ireland, Latin America, Mexico, Peru, and internationally. It operates through three segments: Refining, Renewable Diesel, and Ethanol. The company produces California Reformulated Gasoline Blendstock for Oxygenate Blending (CARBOB) and Conventional Blendstock for Oxygenate Blending (CBOB) gasolines, CARB diesel, diesel, jet fuel, heating oil, and asphalt; feedstocks; aromatics; sulfur and residual fuel oil; intermediate oils; and sulfur, sweet, and sour crude oils. It sells its refined products through wholesale rack and bulk markets; and through outlets under the Valero, Beacon, Diamond Shamrock, Shamrock, Ultramar, and Texaco brands. The company also owns and operates renewable diesel and ethanol plants, as well as produces and sells renewable diesel, renewable naphtha, and neat sustainable aviation fuel under the Diamond Green Diesel brand name. In addition, it offers ethanol and various co-products, including dry distillers grains, syrup, and inedible distillers corn oil to animal feed customers. The company was formerly known as Valero Refining and Marketing Company and changed its name to Valero Energy Corporation in August 1997. Valero Energy Corporation was founded in 1980 and is headquartered in San Antonio, Texas.

Latest Oil, Gas & Consumable Fuels and Phillips 66, Valero Energy Corporation Stock News

As of July 20, 2026, Phillips 66 had a $83.7 billion market capitalization, compared to the Oil, Gas & Consumable Fuels median of $2.6 million. Phillips 66’s stock is NA in 2026, NA in the previous five trading days and up 66.8% in the past year.

Currently, Phillips 66’s price-earnings ratio is 20.6. Phillips 66’s trailing 12-month revenue is $134.5 billion with a 3.1% net profit margin. Year-over-year quarterly sales growth most recently was 6.9%. Analysts expect adjusted earnings to reach $19.741 per share for the current fiscal year. Phillips 66 currently has a 2.4% dividend yield.

Currently, Valero Energy Corporation’s price-earnings ratio is 22.8. Valero Energy Corporation’s trailing 12-month revenue is $117.8 billion with a 3.6% net profit margin. Year-over-year quarterly sales growth most recently was 6.6%. Analysts expect adjusted earnings to reach $33.429 per share for the current fiscal year. Valero Energy Corporation currently has a 1.5% dividend yield.

How We Compare Phillips 66 and Valero Energy Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Phillips 66 and Valero Energy Corporation’s stock grades to see how they measure up against one another.

Learn more about A+ Investor here!

Sign Up to Receive a Free Special Report Showing How A+ Grades Can Help You Make Smarter Investment Decisions

Phillips 66 and Valero Energy Corporation Stock Value Grades

Company	Ticker	Value
Phillips 66	PSX	B
Valero Energy Corporation	VLO	B

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Phillips 66 has a Value Score of 68, which is Value. Valero Energy Corporation has a Value Score of 65, which is Value.

The Value Stock Winner: It’s a Tie!

Looking at the Value Grade breakdown above, both Phillips 66 and Valero Energy Corporation have a Value Grade of B. For investors who focus solely on a company’s valuation, you will need to conduct further research into both of these companies’ other metrics to see if they could be good additions to your portfolio. It’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Phillips 66 and Valero Energy Corporation Growth Grades

Company	Ticker	Growth
Phillips 66	PSX	C
Valero Energy Corporation	VLO	C

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Phillips 66 has a Growth Score of 48, which is Average. Valero Energy Corporation has a Growth Score of 48, which is Average.

The Growth Stock Winner: No Clear Winner

Neither Phillips 66 or Valero Energy Corporation has a high enough Growth Grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Phillips 66 or Valero Energy Corporation is the better investment when it comes to sustainable growth.

Phillips 66 and Valero Energy Corporation’s Momentum Grades

Company	Ticker	Momentum
Phillips 66	PSX	A
Valero Energy Corporation	VLO	A

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Phillips 66 has a Momentum Score of 87, which is Very Strong. Valero Energy Corporation has a Momentum Score of 92, which is Very Strong.

The Momentum Grade Winner: It’s a Tie!

Looking at the Momentum Grade breakdown above, both Phillips 66 and Valero Energy Corporation have a grade of A. For those who focus solely on a company’s momentum, further research will need to be conducted into both companies to see if they fit your individual needs as an investor.

Other Phillips 66 and Valero Energy Corporation Grades

In addition to Momentum, Value and Growth, A+ Investor also provides grades for Estimate Revisions and Quality.

Earnings estimate revisions scores take into account the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, surprises beget further surprises‐or at least continued sales growth (the exact opposite is generally true, too).

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and F-Score.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Phillips 66 and Valero Energy Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Phillips 66 or Valero Energy Corporation Stock?

Overall, Phillips 66 stock has a Value Score of 68, Growth Score of 48 and Momentum Score of 87.

Valero Energy Corporation stock has a Value Score of 65, Growth Score of 48 and Momentum Score of 92.

Comparing Phillips 66 and Valero Energy Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.