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

About MPLX LP, Kinder Morgan 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.

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 MPLX LP, Kinder Morgan, Inc. Stock News

As of September 4, 2026, MPLX LP had a $60.5 billion market capitalization, compared to the Oil, Gas & Consumable Fuels median of $2.8 million. MPLX LP’s stock is up 11.8% in 2026, up 0.7% in the previous five trading days and up 17.44% in the past year.

Currently, MPLX LP’s price-earnings ratio is 12.8. 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 7.2% dividend yield.

As of September 4, 2026, Kinder Morgan, Inc. had a $69.9 billion market cap, putting it in the 95th percentile of all stocks. Kinder Morgan, Inc.’s stock is up 14.2% in 2026, down 0.5% in the previous five trading days and up 17.56% in the past year.

Currently, Kinder Morgan, Inc.’s price-earnings ratio is 20.3. Kinder Morgan, Inc.’s trailing 12-month revenue is $18.0 billion with a 19.3% net profit margin. Year-over-year quarterly sales growth most recently was 10.8%. Analysts expect adjusted earnings to reach $1.557 per share for the current fiscal year. Kinder Morgan, Inc. currently has a 3.8% dividend yield.

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

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MPLX LP, Kinder Morgan and Inc. Growth Grades

Company	Ticker	Growth
MPLX LP	MPLX	A
Kinder Morgan, Inc.	KMI	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.

MPLX LP has a Growth Score of 95, which is Very Strong. Kinder Morgan, Inc. has a Growth Score of 77, which is Strong.

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

Company	Ticker	Quality
MPLX LP	MPLX	B
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.

MPLX LP has a Quality Score of 62, which is Strong. Kinder Morgan, Inc. has a Quality Score of 61, which is Strong.

The Quality Grade Winner: It’s a Tie!

Looking at the Quality Grade breakdown above, both MPLX LP, Kinder Morgan and Inc. have a grade of B. For investors who focus solely on a company’s overall quality, you will need to conduct further research into both companies to see if they are a good fit for your portfolio. As a good rule of thumb, you should always analyze multiple factors based on a wide range of metrics before choosing a company to invest in.

MPLX LP, Kinder Morgan and Inc.’s Momentum Grades

Company	Ticker	Momentum
MPLX LP	MPLX	C
Kinder Morgan, Inc.	KMI	C

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 54, which is Average. Kinder Morgan, Inc. has a Momentum Score of 52, which is Average.

The Momentum Stock Winner: No Clear Winner

Neither MPLX LP, Kinder Morgan or Inc. has a strong enough Momentum Grade to 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, Kinder Morgan or Inc. is the better investment when it comes to momentum.

Other MPLX LP, Kinder Morgan and Inc. 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 MPLX LP, 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, MPLX LP, Kinder Morgan or Inc. Stock?

Overall, MPLX LP stock has a Growth Score of 95, Momentum Score of 54 and Quality Score of 62.

Kinder Morgan, Inc. stock has a Growth Score of 77, Momentum Score of 52 and Quality Score of 61.

Comparing MPLX LP, 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.