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 ONEOK, Inc., Kinder Morgan or Inc. 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 ONEOK, Inc., Kinder Morgan and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About ONEOK, Inc., Kinder Morgan and Inc.

ONEOK, Inc. operates as a midstream service provider of gathering, processing, fractionation, transportation, storage, and marine export services in the United States. It operates in four segments: Natural Gas Gathering and Processing; Natural Gas Liquids; Natural Gas Pipelines; and Refined Products and Crude. The company owns natural gas gathering pipelines and processing plants in the Mid-Continent, Permian Basin, North Texas, Gulf Coast region, and Rocky Mountain regions; and provides midstream services to producers of NGLs. It also owns NGL gathering and distribution pipelines, fractionation, terminal and storage facilities; and transports refined products, including gasoline, diesel fuel, aviation fuel, kerosene, and heating oil. In addition, the company transports and stores natural gas through regulated interstate and intrastate natural gas transmission pipelines, and natural gas storage facilities; it owns and operates a parking garage in downtown Tulsa, Oklahoma; and leases buildings, warehouses, office space, land, and equipment, including pipeline equipment, pipeline capacity, rail cars, and information technology equipment. Further, the company transports, stores, and distributes refined products, purity NGLs, and crude oil, as well as conducts commodity-related activities, including liquids blending and marketing activities. It serves integrated and independent exploration and production companies; other NGL and natural gas gathering and processing companies; crude oil and natural gas production companies; utilities; industrial companies; natural gasoline distributors; propane distributors; municipalities; ethanol producers; petrochemical, refining, and marketing companies; and diluent users, refineries, and exporters. ONEOK, Inc. was founded in 1906 and is headquartered in Tulsa, Oklahoma.

Kinder Morgan, Inc. operates as an energy infrastructure company primarily in North America. It operates through Natural Gas Pipelines, Products Pipelines, Terminals, and CO2 segments. The Natural Gas Pipelines segment owns and operates interstate and intrastate natural gas pipeline, and storage systems; natural gas gathering systems and natural gas processing and treating facilities; natural gas liquids fractionation facilities and transportation systems; and liquefied natural gas gasification, liquefaction, and storage facilities. The Products Pipelines segment owns and operates refined petroleum products, and crude oil and condensate pipelines; and associated product terminals and petroleum pipeline transmix facilities. The Terminals segment owns and/or operates liquids and bulk terminals that stores and handles various commodities, including gasoline, diesel fuel, renewable fuel and feedstocks, chemicals, ethanol, metals, and petroleum coke; and owns tankers. The CO2 segment produces, transports, and markets CO2 to recovery and production crude oil from mature oil fields; owns interests in/or operates oil fields and gasoline processing plants; and operates a crude oil pipeline system in West Texas, as well as owns and operates RNG and LNG facilities. The company was formerly known as Kinder Morgan Holdco LLC and changed its name to Kinder Morgan, Inc. in February 2011. Kinder Morgan, Inc. was founded in 1997 and is headquartered in Houston, Texas.

Latest Oil, Gas & Consumable Fuels and ONEOK, Inc., Kinder Morgan, Inc. Stock News

As of May 12, 2026, ONEOK, Inc. had a $55.7 billion market capitalization, compared to the Oil, Gas & Consumable Fuels median of $2.7 million. ONEOK, Inc.’s stock is up 19.3% in 2026, up 2.5% in the previous five trading days and up 7.45% in the past year.

Currently, ONEOK, Inc.’s price-earnings ratio is 15.8. ONEOK, Inc.’s trailing 12-month revenue is $35.2 billion with a 10.0% net profit margin. Year-over-year quarterly sales growth most recently was 19.6%. Analysts expect adjusted earnings to reach $5.769 per share for the current fiscal year. ONEOK, Inc. currently has a 4.8% dividend yield.

As of May 12, 2026, Kinder Morgan, Inc. had a $72.2 billion market cap, putting it in the 95th percentile of all stocks. Kinder Morgan, Inc.’s stock is up 17.7% in 2026, up 2.5% in the previous five trading days and up 18.82% in the past year.

Currently, Kinder Morgan, Inc.’s price-earnings ratio is 21.9. Kinder Morgan, Inc.’s trailing 12-month revenue is $17.5 billion with a 18.9% net profit margin. Year-over-year quarterly sales growth most recently was 13.8%. Analysts expect adjusted earnings to reach $1.461 per share for the current fiscal year. Kinder Morgan, Inc. currently has a 3.7% dividend yield.

How We Compare ONEOK, Inc., Kinder Morgan and Inc. 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 ONEOK, Inc., Kinder Morgan and Inc.’s stock grades to see how they measure up against one another.

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ONEOK, Inc., Kinder Morgan and Inc. Stock Value Grades

Company	Ticker	Value
ONEOK, Inc.	OKE	C
Kinder Morgan, Inc.	KMI	D

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.

ONEOK, Inc. has a Value Score of 58, which is Average. Kinder Morgan, Inc. has a Value Score of 34, which is Expensive.

The Value Stock Winner: No Clear Winner

Neither ONEOK, Inc., Kinder Morgan or Inc. has a high enough value 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 portfolio. It’s important to look at a wide range of financial metrics in order to determine if ONEOK, Inc., Kinder Morgan or Inc. is the better investment when it comes to value.

ONEOK, Inc., Kinder Morgan and Inc.’s Quality Grades

Company	Ticker	Quality
ONEOK, Inc.	OKE	C
Kinder Morgan, Inc.	KMI	B

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.

ONEOK, Inc. has a Quality Score of 52, which is Average. Kinder Morgan, Inc. has a Quality Score of 69, which is Strong.

The Quality Grade Winner: Kinder Morgan, Inc.

As you can clearly see from the Quality Grade breakdown above, Kinder Morgan, Inc. has a better overall quality grade than ONEOK, Inc.. For investors who are looking for companies with higher quality than others in the same industry, Kinder Morgan, Inc. 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.

ONEOK, Inc., Kinder Morgan and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
ONEOK, Inc.	OKE	C
Kinder Morgan, Inc.	KMI	B

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

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

ONEOK, Inc. has a Earnings Estimate Score of 45, which is Neutral. Kinder Morgan, Inc. has a Earnings Estimate Score of 73, which is Positive.

The Earnings Estimate Revisions Grade Winner: Kinder Morgan, Inc.

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Kinder Morgan, Inc. has a better Earnings Estimate Revisions Grade than ONEOK, Inc.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Kinder Morgan, Inc. could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other ONEOK, Inc., Kinder Morgan and Inc. Grades

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

Momentum grades help 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.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

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 ONEOK, Inc., Kinder Morgan and Inc. pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, ONEOK, Inc., Kinder Morgan or Inc. Stock?

Overall, ONEOK, Inc. stock has a Value Score of 58, Estimate Revisions Score of 45 and Quality Score of 52.

Kinder Morgan, Inc. stock has a Value Score of 34, Estimate Revisions Score of 73 and Quality Score of 69.

Comparing ONEOK, Inc., Kinder Morgan and Inc.’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.