Middle market private equity firm

One Equity Partners

  • HeadquartersNew York, NY S4
  • Founded2001 S2
  • Websiteoneequity.com
  • Last verifiedOctober 20, 2026

At a glance

Assets under management$16B (as of Sep 2025) S5
Latest fundOne Equity Partners IX, $3.3B (Sep 2025) S5
EBITDA range$10M to $150M S3
Revenue range$100M to $750M S3
Deal typesPlatform, Add-on S3
GeographyNorth America, Europe S3
SectorsIT Services & MSP, Industrial & Manufacturing, Distribution, Healthcare Services, Software & SaaS, Construction Services, Environmental & Waste

What One Equity Partners buys

One Equity Partners (OEP) is a New York private equity firm founded in 2001 that was part of JP Morgan until it spun out on its own in 2015. It buys industrial, healthcare and technology companies in North America and Western Europe and has offices in New York, Chicago, Frankfurt and Amsterdam. Its stated targets are $100 million to $750 million of revenue and $10 million to $150 million of EBITDA, so a typical OEP platform is much larger than most founder-owned companies. It closed its $3.25 billion ninth fund in September 2025, which lifted its assets under management to about $16 billion.

OEP's method is to buy a platform, often a business carved out of a large corporation, and then merge other companies into it. It favors business-to-business companies in fragmented markets and says its relationships with owners usually build over 12 to 24 months before a deal. A smaller owner is most likely to meet OEP as an add-on: in late 2025, for example, Brown & Root agreed to buy Specialty Welding and Turnarounds.

Recent deals

Announced in the 24 months before October 20, 2026.

DateCompanyTypeSectorSource
Oct 2026Myriad360Majority stake in a New York systems integrator with managed services; leaders keep a significant stakePlatformIT Services & MSPSource
Sep 2026Metro East IndustriesIllinois railcar and locomotive repair company, in partnership with the Ortyl familyPlatformTransportation & LogisticsSource
Jul 2026EPIC PipingAgreement to buy the Baton Rouge maker of prefabricated piping systems, along with BendTecPlatformIndustrial & ManufacturingSource
Jun 2026LeviatCarve-out of CRH's construction accessories business, based in AmsterdamPlatformIndustrial & ManufacturingSource
Apr 2026ArmisCompleted sale of its stake to ServiceNow in a deal valuing the company at $7 billionExitCybersecuritySource
Mar 2026Kitwave GroupTake-private of a U.K. food and drink wholesale distributorPlatformDistributionSource
Feb 2026Bozzetto GroupAgreement to buy an Italian specialty chemicals makerPlatformIndustrial & ManufacturingSource
Dec 2025MontanhydraulikAgreement to buy a German maker of large hydraulic cylindersPlatformIndustrial & ManufacturingSource
Dec 2025EthosEnergy aerospace and defense businessEthosEnergy agreed to sell this unit to HEICO's Wencor GroupExitIndustrial & ManufacturingSource
Dec 2025Harmonic video businessMediaKind agreed to buy Harmonic's video businessAdd-onSoftware & SaaSSource
Nov 2025InfuCare RxExit from the home infusion provider through an equity buyback led by its founderExitHealthcare ServicesSource
Nov 2025Specialty Welding and TurnaroundsLouisiana industrial welding and turnaround services firm; Brown & Root agreed to buy itAdd-onConstruction ServicesSource
Nov 2025Ultima Business SolutionsU.K. managed services provider merged into TrustmarqueAdd-onIT Services & MSPSource
Oct 2025Digital ValueAgreement to buy a majority stake in a listed Italian IT solutions resellerPlatformIT Services & MSPSource
Oct 2025McNICHOLSTampa distributor of specialty metal and fiberglass products; the family stays as major shareholders and managersPlatformDistributionSource
Sep 2025One Equity Partners IXNinth fund closed at its $3.25 billion hard capFund closeSource
Aug 2025BARTECAgreement to buy a German explosion-protection equipment maker from a group led by Bridgepoint Credit and AlcentraPlatformIndustrial & ManufacturingSource
Aug 2025Brown & Root Industrial ServicesAgreement to invest in a Baton Rouge industrial maintenance and turnaround firm; KBR keeps a significant stakePlatformConstruction ServicesSource
Jul 2025Eco Material TechnologiesAgreed sale to CRH for $2.1 billion, alongside Warburg Pincus and Green Cement InvestmentsExitIndustrial & ManufacturingSource
Mar 2025CraftMark BakeryAgreement to buy an Indianapolis wholesale bakery supplierPlatformConsumer & FoodSource
Feb 2025Wheeler Fleet SolutionsCarve-out of a Pennsylvania heavy-duty truck parts distributor from VSE CorporationPlatformDistributionSource
Jan 2025W.W. WilliamsCompleted sale of the Ohio truck service and diesel parts companyExitAuto Services & CollisionSource
Jan 2025EthosEnergyCompleted purchase of the gas turbine repair and maintenance company, formed in 2014 as a Wood and Siemens Energy joint venturePlatformIndustrial & ManufacturingSource
Oct 2024YorktelCompleted purchase of a Wall, N.J. managed services and collaboration technology firmPlatformIT Services & MSPSource

Portfolio by sector

From the firm's portfolio page S6.

Healthcare

  • AdaptHealth Current
  • DWK Life Sciences Current
  • Ernest Current
  • Fortis Healthcare Solutions Current
  • React Health Current

Healthcare Services

  • NCP Current

Industrials

  • Acteon Current
  • Alltub Current
  • AMECO Current
  • Amey Current
  • Associated Metal Forming Technologies Current
  • Ballymore Current
  • BARTEC Current
  • Bozzetto Current
  • Brown & Root Current
  • CBM Current
  • Clayens Current
  • Comau Current
  • Comer (fka Walterscheid) Current
  • CraftMark Bakery Current
  • DESMI Current
  • EPIC Piping Current
  • Fortaco Current
  • Guidant Current
  • Imperative Chemical Partners Current
  • Kitwave Current
  • Leviat Current
  • McNICHOLS Current
  • Momentum Current
  • Montanhydraulik Current
  • Muehlhan Current
  • Nexion Current
  • Norit Current
  • OMNI Current
  • ORS Medco Current
  • PGW Auto Glass Current
  • Rosboro Current
  • SGB-SMIT Current
  • Siti B&T Current
  • USCO Current
  • Wheeler Fleet Solutions Current
  • Wood Technologies Current

Technology

  • Bibliotheca Current
  • Cicor Current
  • Digital Value Current
  • enthus (fka MCL) Current
  • Infobip Current
  • Kinly Current
  • Kirey Group Current
  • Locality Current
  • MediaKind Current
  • MSQ Partners Current
  • Myriad360 Current
  • Mythics Emergent Group Current
  • Neology Current
  • Nexcess Current
  • Orion Current
  • Sopra GMT Current
  • Spartronics Current
  • Trustmarque Current
  • VASS Current
  • Verimatrix Current

Other

  • Ethos Current

Greymont’s take

How One Equity Partners fits a seller

OEP fits owners of larger business-to-business companies who want a buyer that will merge them with others to build scale. Its IT services holdings, including Myriad360, Kinly and Mythics Emergent Group, make it a natural buyer for managed service providers and systems integrators. It also owns U.S. industrial distributors such as McNICHOLS and Wheeler Fleet Solutions.

Owners are not always bought out in full. At Myriad360 the leadership team kept a significant stake, and the McNichols family stayed on as major shareholders and kept running their company. In 2025 OEP left InfuCare Rx through a buyback led by the founder. Because OEP is built around combinations, an owner should ask which existing platform OEP sees the business joining, and what role the owner would have once the companies merge.

Questions owners ask

Does One Equity Partners buy IT services and managed service providers?

Yes. Technology is one of its three sectors. Current holdings include Myriad360, a New York systems integrator it backed in October 2026, Kinly, a New Jersey managed service provider, and Mythics Emergent Group, which resells and integrates software for the public sector. In Europe it owns Trustmarque, Digital Value and Kirey Group.

What size company does OEP look for?

Its stated targets are $100 million to $750 million of revenue and $10 million to $150 million of EBITDA. A company below that range is more likely to join one of OEP's existing platforms as an add-on than to become a new platform itself.

Can an owner keep a stake when OEP invests?

Often, yes. Myriad360's leaders kept a significant ownership position in the October 2026 deal, and the McNichols family stayed as significant shareholders in October 2025. Corporate sellers have also stayed in, such as KBR at Brown & Root and Stellantis at Comau.

How long does it take OEP to get to a deal?

OEP says its senior partners lead its own deal sourcing and that relationships with owners typically develop over 12 to 24 months before a transaction is agreed.

Sources

  1. S1One Equity Partners home page Accessed October 20, 2026
  2. S2One Equity Partners: About (founding and fund milestones) Accessed October 20, 2026
  3. S3One Equity Partners: Approach and investment criteria Accessed October 20, 2026
  4. S4One Equity Partners: Contact (offices) Accessed October 20, 2026
  5. S5One Equity Partners Closes $3.25 Billion Fund IX (September 8, 2025) Accessed October 20, 2026
  6. S6One Equity Partners: Portfolio Accessed October 20, 2026
  7. S7One Equity Partners: News Accessed October 20, 2026
  8. S8One Equity Partners Makes Majority Investment in Myriad360 (October 1, 2026) Accessed October 20, 2026
  9. S9One Equity Partners Invests in McNICHOLS (October 1, 2025) Accessed October 20, 2026

Compiled by Greymont Advisors from public sources, including the firm’s own website and press releases. Greymont is not affiliated with One Equity Partners. Figures are as reported on the dates shown and may have changed. Request a correction

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