One Equity Partners was the merchant banking arm of JPMorgan Chase,[1] focused on leveraged buyout and growth capital investments in middle-market companies.

Formed by Bank One in 2001, the group has offices in New York City, Chicago, São Paulo, Vienna, Hong Kong and Frankfurt.

In 2006, One Equity, together with The Blackstone Group and Technology Crossover Ventures, acquired Travelport from Cendant in a $4.3 billion buyout.

Among One Equity's other notable investments include Polaroid Corporation, which was sold in 2005 at a significant gain,[4][5][6] as well as: Apollo Hospitals, CWT, Clipper Windpower, NCO Group,[7] Pfleiderer, Systagenix Wound Management, SGB-SMIT Group, ThyssenKrupp Marine Systems, Vertrue, X-Rite, Orion Inc., Italian system integrator Engineering Ingegneria Informatica, Sonneborn LLC (sold in 2019), Lutech, and VASS.

[17] In 2006 One Equity Partners purchased Pennsylvania-based NCO Group, "which posted $1.56 billion in revenue last year, making it the largest debt-collection company."