Oklahoma Top Companies List by Market Cap as of August 2026

Oklahoma Top Companies List by Market Cap as on August 2026. Biggest Oklahoma Companies List by Market Cap in August 2026. Oklahoma Largest Companies in August 2026.

Oklahoma Top Companies by Market Cap in 2026
Oklahoma Top Companies by Market Cap in 2026, Oklahoma Largest Companies in 2026, Biggest Oklahoma Companies by Market Cap.

  1. AAON Inc.

    World Rank (Aug-2026)
    2,799
    Market Cap (Aug-2026)
    7.239 Billion USD
    World Rank (Jan-05-2024)
    2,542
    Market Cap (Jan-05-2024)
    5.991 Billion USD
    World Rank (Jul-30-2023)
    2,691
    Market Cap (Jul-30-2023)
    5.589 Billion USD
    World Rank (Dec-25-2022)
    3,237
    Market Cap (Dec-25-2022)
    4.036 Billion USD
    World Rank (Jan-07-2022)
    3,995
    Market Cap (Jan-07-2022)
    3.88 Billion USD
    Annual Revenue in USD
    1,442 Million USD
    Annual Operating Income in USD
    146 Million USD
    Annual Net Income in USD
    108 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ Nasdaq
    Company Profile

    AAON is a Heating, ventilation and Air Conditioning company. The Tulsa offices and manufacturing facilities are over 1.51 million sq. ft., the Longview offices and manufacturing facilities are over 263,000 sq. ft., the Parkville facility is 48,500 sq. ft., and employs over 2,000 individuals. The headquarters is in USA.

    Company Website
    AAON INC

  2. WPX Energy

    World Rank (Aug-2026)
    3,158
    World Rank (Jan-05-2024)
    3,158
    World Rank (Jul-30-2023)
    3,158
    World Rank (Dec-25-2022)
    3,158
    World Rank (Jan-07-2022)
    3,158
    Annual Revenue in USD
    2,292 Million USD
    Annual Operating Income in USD
    144 Million USD
    Annual Net Income in USD
    256 Million USD
    Annual Results for Period Ending
    For year ending December-2019
    Headquarters Country
    USA
    Company Profile

    WPX ENERGY is Oil and Gas Exploration company with headquarters is in Oklahoma, USA.

    Company Website
    WPX ENERGY INC
    Wikipedia
    Wikipedia

  3. ONE Gas Inc.

    World Rank (Aug-2026)
    3,590
    Market Cap (Aug-2026)
    5.090 Billion USD
    World Rank (Jan-05-2024)
    3,807
    Market Cap (Jan-05-2024)
    3.605 Billion USD
    World Rank (Jul-30-2023)
    3,314
    Market Cap (Jul-30-2023)
    4.393 Billion USD
    World Rank (Dec-25-2022)
    3,206
    Market Cap (Dec-25-2022)
    4.090 Billion USD
    World Rank (Jan-07-2022)
    3,722
    Market Cap (Jan-07-2022)
    4.23 Billion USD
    Annual Operating Income in USD
    457 Million USD
    Annual Net Income in USD
    264 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    ONE Gas is a Natural Gas Distribution Services company. It provides natural gas distribution services to more than 2 million customers in Oklahoma, Kansas and Texas. The company serves residential, commercial, industrial, transportation and wholesale customers in all three states. The headquarters is in USA.

    Company Website
    ONE GAS INC

  4. Helmerich & Payne

    World Rank (Aug-2026)
    3,933
    Market Cap (Aug-2026)
    4.417 Billion USD
    World Rank (Jan-05-2024)
    3,784
    Market Cap (Jan-05-2024)
    3.626 Billion USD
    World Rank (Jul-30-2023)
    3,212
    Market Cap (Jul-30-2023)
    4.560 Billion USD
    World Rank (Dec-25-2022)
    2,658
    Market Cap (Dec-25-2022)
    5.158 Billion USD
    World Rank (Jan-07-2022)
    4,844
    Market Cap (Jan-07-2022)
    3.00 Billion USD
    Annual Revenue in USD
    3,679 Million USD
    Annual Operating Income in USD
    3 Million USD
    Annual Net Income in USD
    -164 Million USD
    Annual Results for Period Ending
    For year ending September-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    Helmerich & Payne is a Petroleum Drilling and technology services providing company. The headquarters is in USA.

    Company Website
    Helmerich & Payne
    Wikipedia
    Wikipedia

  5. Kar Auction Services

    World Rank (Aug-2026)
    4,134
    Market Cap (Aug-2026)
    4.100 Billion USD
    World Rank (Jan-05-2024)
    6,614
    Market Cap (Jan-05-2024)
    1.562 Billion USD
    World Rank (Jul-30-2023)
    6,389
    Market Cap (Jul-30-2023)
    1.682 Billion USD
    World Rank (Dec-25-2022)
    6,864
    Market Cap (Dec-25-2022)
    1.393 Billion USD
    World Rank (Jan-07-2022)
    6,251
    Market Cap (Jan-07-2022)
    2.02 Billion USD
    Annual Revenue in USD
    1,935 Million USD
    Annual Operating Income in USD
    197 Million USD
    Annual Net Income in USD
    178 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile
    KAR Auction Services is provider of Cars and Automotive auctions through Innovation and Technology company. It is having nearly 3.8 million vehicles valued at approximately $40 billion through auctions and generated approximately $2.8 billion in revenue and has 10,000 employees and maintains business units across the United States, Canada, Mexico, the UK and Europe. The company is integrated physical, online and mobile marketplaces reduce risk improve transparency and streamline the experience for customers in more than 80 countries. The headquarters is in USA.
    Company Website
    KAR AUCTION SERVICES INC

  6. Bancfirst Corporation

    World Rank (Aug-2026)
    4,265
    Market Cap (Aug-2026)
    3.887 Billion USD
    World Rank (Jan-05-2024)
    4,290
    Market Cap (Jan-05-2024)
    3.083 Billion USD
    World Rank (Jul-30-2023)
    4,071
    Market Cap (Jul-30-2023)
    3.300 Billion USD
    World Rank (Dec-25-2022)
    4,170
    Market Cap (Dec-25-2022)
    2.911 Billion USD
    World Rank (Jan-07-2022)
    5,577
    Market Cap (Jan-07-2022)
    2.42 Billion USD
    Annual Net Income in USD
    241 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ Nasdaq
    Company Profile

    BancFirst Corporation is a State Chartered Bank Holding company. The headquarters is in USA.

    Company Website
    BANCFIRST CORPORATION

  7. Alliance Resource Partners

    World Rank (Aug-2026)
    4,781
    Market Cap (Aug-2026)
    3.271 Billion USD
    World Rank (Jan-05-2024)
    4,669
    Market Cap (Jan-05-2024)
    2.731 Billion USD
    World Rank (Jul-30-2023)
    5,034
    Market Cap (Jul-30-2023)
    2.436 Billion USD
    World Rank (Dec-25-2022)
    4,295
    Market Cap (Dec-25-2022)
    2.816 Billion USD
    World Rank (Jan-07-2022)
    6,830
    Market Cap (Jan-07-2022)
    1.75 Billion USD
    Annual Revenue in USD
    2,195 Million USD
    Annual Operating Income in USD
    385 Million USD
    Annual Net Income in USD
    311 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Yahoo @ Nasdaq
    Company Profile

    Alliance Resource Partners is a Diversified Coal Producer and Marketer with Significant Operations in the Eastern United States. The headquarters is in USA.

    Company Website
    ALLIANCE RESOURCE PARTNERS L.P.

  8. Gulfport Energy Corporation

    World Rank (Aug-2026)
    5,034
    Market Cap (Aug-2026)
    3.007 Billion USD
    World Rank (Jan-05-2024)
    5,052
    Market Cap (Jan-05-2024)
    2.421 Billion USD
    World Rank (Jul-30-2023)
    5,963
    Market Cap (Jul-30-2023)
    1.880 Billion USD
    World Rank (Dec-25-2022)
    6,771
    Market Cap (Dec-25-2022)
    1.421 Billion USD
    World Rank (Jan-07-2022)
    7,267
    Market Cap (Jan-07-2022)
    1.57 Billion USD
    Annual Revenue in USD
    1,423 Million USD
    Annual Operating Income in USD
    600 Million USD
    Annual Net Income in USD
    428 Million USD
    Annual Results for Period Ending
    For year ending December-2025
    Headquarters Country
    USA
    Company Profile
    Gulfport Energy Corporation is an independent natural gas-weighted exploration and production company focused on the exploration, acquisition and production of natural gas, crude oil and NGL. The company annual revenue is 808 million USD and annual net income is 138 million USD as on 2021. The headquarters is in USA.
    Company Website
    GULFPORT ENERGY CORPORATION

  9. NGL Energy Partners LP

    World Rank (Aug-2026)
    5,952
    Market Cap (Aug-2026)
    2.243 Billion USD
    World Rank (Jan-05-2024)
    10,275
    Market Cap (Jan-05-2024)
    0.736 Billion USD
    World Rank (Jul-30-2023)
    6,278
    Market Cap (Jul-30-2023)
    1.732 Billion USD
    World Rank (Dec-25-2022)
    10,792
    Market Cap (Dec-25-2022)
    0.650 Billion USD
    World Rank (Jan-07-2022)
    8,849
    Market Cap (Jan-07-2022)
    1.12 Billion USD
    Annual Revenue in USD
    3,156 Million USD
    Annual Operating Income in USD
    95 Million USD
    Annual Net Income in USD
    -142 Million USD
    Annual Results for Period Ending
    For year ending March-2026
    Headquarters Country
    USA
    Yahoo @ NYSE
    Company Profile

    NGL Energy Partners LP is a diversified midstream MLP that provides multiple services to producers and end users including transportation, storage, blending and marketing of crude oil, NGLs, refined products or renewable and water solutions. The company provides transport crude oil from the wellhead to refiners, wastewater from the wellhead to treatment for disposal, recycle or discharge.

    natural gas liquids from fractionators or hubs to refineries and end users, refined products from refiners to customers. The headquarters is in USA.

    Company Website
    NGL ENERGY PARTNERS LP

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