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 MPLX LP, ONEOK 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 MPLX LP, ONEOK and Inc. compare based on key financial metrics to determine which better meets your investment needs.

About MPLX LP, ONEOK and Inc.

MPLX LP owns and operates midstream energy infrastructure and logistics assets primarily in the United States. It operates in two segments, Crude Oil and Products Logistics; and Natural Gas and NGL Services. The company is involved in the gathering, processing, and transportation of natural gas; gathering, transportation, fractionation, storage, and marketing of natural gas liquids; gathering, storage, transportation, and distribution of crude oil and refined products, as well as other hydrocarbon-based products and renewables; and sale of residue gas and condensate. It also engages in inland marine businesses, comprising fleet of boats and barges transport light products, heavy oils, crude oil, renewable fuels, chemicals, and feedstocks in the Mid-Continent and Gulf Coast regions, as well as a marine repair facility located on the Ohio River; and distribution of fuel, as well as operates refining logistics, terminals, rail facilities, and storage caverns. In addition, it operates terminal facilities for the receipt, storage, blending, additization, handling, and redelivery of refined petroleum products through the pipeline, rail, marine, and truck transportation. MPLX GP LLC acts as the general partner of MPLX LP. The company was incorporated in 2012 and is headquartered in Findlay, Ohio. MPLX LP operates as a subsidiary of Marathon Petroleum Corporation.

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.

Latest Oil, Gas & Consumable Fuels and MPLX LP, ONEOK, Inc. Stock News

As of September 9, 2026, MPLX LP had a $61.1 billion market capitalization, compared to the Oil, Gas & Consumable Fuels median of $2.7 million. MPLX LP’s stock is up 11.7% in 2026, up 1.1% in the previous five trading days and up 20.12% in the past year.

Currently, MPLX LP’s price-earnings ratio is 13.0. MPLX LP’s trailing 12-month revenue is $12.0 billion with a 39.3% net profit margin. Year-over-year quarterly sales growth most recently was 10.6%. Analysts expect adjusted earnings to reach $4.420 per share for the current fiscal year. MPLX LP currently has a 7.1% dividend yield.

As of September 9, 2026, ONEOK, Inc. had a $60.4 billion market cap, putting it in the 94th percentile of all stocks. ONEOK, Inc.’s stock is up 29.9% in 2026, down 0.6% in the previous five trading days and up 34.28% in the past year.

Currently, ONEOK, Inc.’s price-earnings ratio is 16.6. ONEOK, Inc.’s trailing 12-month revenue is $39.4 billion with a 9.3% net profit margin. Year-over-year quarterly sales growth most recently was 52.8%. Analysts expect adjusted earnings to reach $5.893 per share for the current fiscal year. ONEOK, Inc. currently has a 4.5% dividend yield.

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

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MPLX LP, ONEOK and Inc. Growth Grades

Company	Ticker	Growth
MPLX LP	MPLX	A
ONEOK, Inc.	OKE	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.

MPLX LP has a Growth Score of 95, which is Very Strong. ONEOK, Inc. has a Growth Score of 59, which is Average.

The Growth Grade Winner: MPLX LP

As you can clearly see from the Growth Grade breakdown above, MPLX LP has a more attractive growth grade than ONEOK, Inc.. For investors who focus solely on how a company is growing relative to other companies in the same industry, MPLX LP 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.

MPLX LP, ONEOK and Inc.’s Momentum Grades

Company	Ticker	Momentum
MPLX LP	MPLX	C
ONEOK, Inc.	OKE	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%.

MPLX LP has a Momentum Score of 60, which is Average. ONEOK, Inc. has a Momentum Score of 67, which is Strong.

The Momentum Grade Winner: ONEOK, Inc.

As you can clearly see from the Momentum Grade breakdown above, ONEOK, Inc. is considered to have stronger momentum compared to MPLX LP. For those specifically looking for companies that have stronger momentum compared to other companies in the same industry, ONEOK, Inc. 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.

MPLX LP, ONEOK and Inc.’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
MPLX LP	MPLX	D
ONEOK, Inc.	OKE	D

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.

MPLX LP has a Earnings Estimate Score of 37, which is Negative. ONEOK, Inc. has a Earnings Estimate Score of 37, which is Negative.

The Earnings Estimate Revisions Stock Winner: No Clear Winner

Neither MPLX LP, ONEOK or Inc. has an Earnings Estimate Revisions Grade that could be considered a “winner.” Investors 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 MPLX LP, ONEOK or Inc. is the better investment when it comes to estimate revisions.

Other MPLX LP, ONEOK and Inc. Grades

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

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

So, Which Is the Better Investment, MPLX LP, ONEOK or Inc. Stock?

Overall, MPLX LP stock has a Growth Score of 95, Momentum Score of 60 and Estimate Revisions Score of 37.

ONEOK, Inc. stock has a Growth Score of 59, Momentum Score of 67 and Estimate Revisions Score of 37.

Comparing MPLX LP, ONEOK 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.