Marvin Stock Watch guide

Top 15 Small-Cap Energy Stocks, Ranked by Marvin Scores

Marvin's rules picked 15 small-cap Energy stocks, led by Flowco Holdings, Uranium Royalty, SandRidge Energy and Star Group. Each is ranked by Overall score against other companies in its own industry.

Updated 2026-11-02 · 15 stocks · Scores are Marvin's own

Small-cap energy stocks are smaller companies in the Energy sector, such as oil and gas producers, equipment and service firms, royalty owners, and solar companies. This list shows 15 of them that Marvin's rules selected, with the highest Overall score first.

The group is mixed. Some companies show strong margins and low debt, while others have thin profits, heavy borrowing or missing data. Each blurb below points out at least one weak spot or gap so you can see both sides.

Energy companies can look very different depending on their industry, so compare a stock's figures with others in its own industry. Treat this list as a starting point for research, not a conclusion.

The list

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How Marvin ranked these stocks

Marvin included companies above a minimum size and under a size ceiling that marks them as small-cap. It kept only the Energy sector, ranked the stocks by highest Overall score first, and allowed at most 4 per industry. Scores are relative to each company's own industry, so a high score means a company compares well with industry peers today, not that it beats every Energy stock on every measure.

Companies above about $300 million in size, ranked by Marvin scores (0-100, relative to each company's own industry). The Energy sector, highest Overall score first, among companies under about $2 billion in size; at most 4 per industry.

The stocks, one by one

Flowco Holdings Inc. FLOC

Energy · Oil & Gas Equipment & Services
Overall 96 Business 93 Opportunity 96

Flowco Holdings leads the list with an overall score of 96 and a quality score of 93. Revenue grew 41.9% last year and free cash flow margin is 25.4%, pointing to fast growth and good cash generation. Caution: debt-to-equity of 0.94 means it uses some borrowed money.

Uranium Royalty Corp. UROY

Energy · Uranium
Overall 95 Business 95 Opportunity 92

Uranium Royalty Corp. scores 95 overall, with an operating margin of 29.3% and revenue growth of 1566.0%, a very large jump that may not repeat every year. Debt-to-equity is 0.62. Caution: return on equity is only 5.8%, and free cash flow margin is missing.

SandRidge Energy, Inc. SD

Energy · Oil & Gas Exploration & Production
Overall 93 Business 86 Opportunity 93

SandRidge Energy has an overall score of 93, an operating margin of 41.1% and a free cash flow margin of 23.6%, which suggest strong profitability. Revenue grew 24.8% and return on equity is 15.3%. Caution: no debt figure is available, so its borrowing level can't be judged here.

Star Group, L.P. SGU

Energy · Oil & Gas Refining & Marketing
Overall 93 Business 81 Opportunity 93

Star Group scores 93 overall, but its business looks thin and steady rather than fast-growing. Revenue grew just 1.0%, operating margin is 7.1% and free cash flow margin is 3.0%. Caution: those slim margins leave little cushion, and debt and return on equity data are missing.

Diversified Energy Company PLC DEC

Energy · Oil & Gas Exploration & Production
Overall 91 Business 60 Opportunity 97

Diversified Energy Company has an overall score of 91, helped by an opportunity score of 97. Revenue grew 141.5%, operating margin is 32.3% and return on equity is 47.6%. Caution: debt-to-equity of 3.00 is high, and its quality score is only 60.

Innovex International, Inc. INVX

Energy · Oil & Gas Equipment & Services
Overall 90 Business 96 Opportunity 78

Innovex International has a high quality score of 96 and very low debt, with debt-to-equity of 0.09. Revenue grew 48.0% and gross margin is 32.4%. Caution: operating margin is a modest 10.0%, return on equity is 5.8%, and free cash flow data is missing.

Suburban Propane Partners, L.P. SPH

Energy · Oil & Gas Energy
Overall 87 Business 88 Opportunity 77

Suburban Propane Partners posts an overall score of 87 with a gross margin of 63.1% and an operating margin of 15.1%. Revenue grew a modest 7.9% and free cash flow margin is 7.3%. Caution: debt and return on equity figures are missing, so leverage is unclear.

Flotek Industries, Inc. FTK

Energy · Oil & Gas Equipment & Services
Overall 78 Business 59 Opportunity 83

Flotek Industries has an overall score of 78, with revenue growth of 26.9%, return on equity of 29.4% and low debt-to-equity of 0.36. Caution: its quality score of 59 is only middling, gross margin is 24.7%, and free cash flow data is missing.

Kimbell Royalty Partners, LP KRP

Energy · Oil & Gas Exploration & Production
Overall 76 Business 80 Opportunity 39

Kimbell Royalty Partners has an overall score of 76 and a quality score of 80, with a high operating margin of 40.1%. Revenue grew 7.9%. Caution: its opportunity score is only 39, and cash flow, return on equity and debt figures are all missing.

Bristow Group Inc. VTOL

Energy · Oil & Gas Equipment & Services
Overall 75 Business 73 Opportunity 73

Bristow Group scores 75 overall, with an operating margin of 10.0%, revenue growth of 5.3% and debt-to-equity of 0.89, all moderate. Return on equity is 9.6%. Caution: free cash flow margin is negative at -2.2%, so the business spent more cash than it generated.

Sunrun Inc. RUN

Energy · Solar
Overall 73 Business 52 Opportunity 93

Sunrun has an overall score of 73, lifted by an opportunity score of 93 and revenue growth of 45.1%. Caution: operating margin is just 2.7%, its quality score is 52, and debt-to-equity of 4.36 is high. Free cash flow data is missing.

Array Technologies, Inc. ARRY

Energy · Solar
Overall 66 Business 59 Opportunity 66

Array Technologies has an overall score of 66, with revenue growth of 40.2% and a free cash flow margin of 11.4%. Gross margin is 24.3%. Caution: operating margin is negative at -5.1%, meaning day-to-day operations lost money, and debt data is missing.

Natural Resource Partners L.P. NRP

Energy · Coal
Overall 66 Business 73 Opportunity 51

Natural Resource Partners has an overall score of 66, built on a quality score of 73 and an opportunity score of 51. Caution: no growth, margin, return or debt figures are available, so this score can't be checked against the company's financial detail here.

Dorchester Minerals, L.P. DMLP

Energy · Oil & Gas Exploration & Production
Overall 65 Business 89 Opportunity 19

Dorchester Minerals has an overall score of 65 and a strong quality score of 89. Caution: its opportunity score is just 19, revenue shrank -5.4% last year, and margin, cash flow and debt figures are missing.

ARKO Petroleum Corp. Class A Common Stock APC

Energy · Oil & Gas Refining & Marketing
Overall 62 Business 56 Opportunity 56

ARKO Petroleum Corp. closes the list with an overall score of 62, a quality score of 56 and an opportunity score of 56. Caution: debt-to-equity is high at 3.04, and growth, margin and return figures are not available.

Common questions

What does small-cap mean for energy stocks?

Small-cap refers to companies with a smaller total stock market value than large, well-known firms. For this list, Marvin used a size range with a minimum and a ceiling. Smaller energy companies can be less diversified and more sensitive to swings in energy markets.

Why are Marvin scores relative to each company's industry?

Energy covers very different businesses, such as oil producers, equipment makers, royalty owners and solar firms. Their normal margins and debt levels differ, so Marvin compares each company with others in its own industry. A high score means it stands out among its peers, not that it beats every Energy stock.

Does a high Overall score mean a stock is a good investment?

No. The score only describes how a company compares with industry peers today, using the figures Marvin tracks. It does not predict future results or say anything about the stock's price. Look at the weak spots and missing data in each blurb, and do further research before making decisions.

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Marvin's scores (0-100) compare each company with others in its industry today. Growth and margin figures come from SEC filings. This is general information, not personal investment advice or a recommendation to buy or sell anything. Do your own research.