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 Valero Energy Corporation or Eni S.p.A. 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 Valero Energy Corporation and Eni S.p.A. compare based on key financial metrics to determine which better meets your investment needs.

About Valero Energy Corporation and Eni S.p.A.

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.

Eni S.p.A. operates as an integrated energy company in Italy, Other European Union, Rest of Europe, the United States, Asia, Africa, and internationally. The company engages in exploration, development, extracting, manufacturing, trading, and marketing crude oil and natural gas, oil-based fuels, chemical products, and gas-fired power, as well as energy products from renewable sources. The company operates through Exploration & Production; Global Gas & LNG Portfolio and Power; Refining and Chemicals; Enilive; Plenitude; and Corporate and Other Activities segments. The company engages in research, development, and production of oil, condensates, and natural gas. It is also involved in the supply and sale of wholesale natural gas through pipelines; electricity; and international transport, and purchase and marketing of liquefied natural gas. In addition, the company supplies bio-feedstock and crude oil; and stores, produces, distributes, and markets biofuels, oil products, biomethane, basic chemical and petrochemical products, intermediates, plastics and elastomers, and other chemicals, as well as provides smart mobility solutions and services. Further, the company engages in the retail marketing of gas, power, and related services; production and wholesale sale of electricity from renewable plants; and building and managing a network of charging points for electric vehicles. Eni S.p.A. was founded in 1953 and is headquartered in Rome, Italy.

Latest Oil, Gas & Consumable Fuels and Valero Energy Corporation, Eni S.p.A. Stock News

As of July 31, 2026, Valero Energy Corporation had a $90.1 billion market capitalization, compared to the Oil, Gas & Consumable Fuels median of $2.7 million. Valero Energy Corporation’s stock is up 92.2% in 2026, up 3.4% in the previous five trading days and up 124.51% in the past year.

Currently, Valero Energy Corporation’s price-earnings ratio is 13.1. Valero Energy Corporation’s trailing 12-month revenue is $132.4 billion with a 5.4% net profit margin. Year-over-year quarterly sales growth most recently was 51.7%. Analysts expect adjusted earnings to reach $40.194 per share for the current fiscal year. Valero Energy Corporation currently has a 1.5% dividend yield.

As of July 31, 2026, Eni S.p.A. had a $81.0 billion market cap, putting it in the 96th percentile of all stocks. Eni S.p.A.’s stock is up 46.4% in 2026, up 6% in the previous five trading days and up 63.12% in the past year.

Currently, Eni S.p.A.’s price-earnings ratio is 60.9. Eni S.p.A.’s trailing 12-month revenue is $98.2 billion with a 5.9% net profit margin. Year-over-year quarterly sales growth most recently was -0.6%. There are no analysts providing consensus earnings estimates for the current fiscal year. Eni S.p.A. currently has a 4.5% dividend yield.

How We Compare Valero Energy Corporation and Eni S.p.A. 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 Valero Energy Corporation and Eni S.p.A.’s stock grades to see how they measure up against one another.

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Valero Energy Corporation and Eni S.p.A. Growth Grades

Company	Ticker	Growth
Valero Energy Corporation	VLO	C
Eni S.p.A.	E	B

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.

Valero Energy Corporation has a Growth Score of 48, which is Average. Eni S.p.A. has a Growth Score of 64, which is Strong.

The Growth Grade Winner: Eni S.p.A.

As you can clearly see from the Growth Grade breakdown above, Eni S.p.A. has a more attractive growth grade than Valero Energy Corporation. For investors who focus solely on how a company is growing relative to other companies in the same industry, Eni S.p.A. could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Valero Energy Corporation and Eni S.p.A.’s Quality Grades

Company	Ticker	Quality
Valero Energy Corporation	VLO	A
Eni S.p.A.	E	C

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks 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 the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Valero Energy Corporation has a Quality Score of 94, which is Very Strong. Eni S.p.A. has a Quality Score of 54, which is Average.

The Quality Grade Winner: Valero Energy Corporation

As you can clearly see from the Quality Grade breakdown above, Valero Energy Corporation has a better overall quality grade than Eni S.p.A.. For investors who are looking for companies with higher quality than others in the same industry, Valero Energy Corporation could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Valero Energy Corporation and Eni S.p.A.’s Momentum Grades

Company	Ticker	Momentum
Valero Energy Corporation	VLO	A
Eni S.p.A.	E	B

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%.

Valero Energy Corporation has a Momentum Score of 92, which is Very Strong. Eni S.p.A. has a Momentum Score of 74, which is Strong.

The Momentum Grade Winner: Valero Energy Corporation

As you can clearly see from the Momentum Grade breakdown above, Valero Energy Corporation is considered to have stronger momentum compared to Eni S.p.A.. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, Valero Energy Corporation could be a good stock to invest in. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Valero Energy Corporation and Eni S.p.A. Grades

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

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).

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.

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 Valero Energy Corporation and Eni S.p.A. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Valero Energy Corporation or Eni S.p.A. Stock?

Overall, Valero Energy Corporation stock has a Growth Score of 48, Momentum Score of 92 and Quality Score of 94.

Eni S.p.A. stock has a Growth Score of 64, Momentum Score of 74 and Quality Score of 54.

Comparing Valero Energy Corporation and Eni S.p.A.’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.