One Equity Partners IX-A, L.P.

One Equity Partners IX-A, L.P. is a parallel co-investment vehicle established in connection with One Equity Partners IX, L.P. (OEP IX), the ninth and largest flagship fund raised by One Equity Partners. As a parallel fund structure, OEP IX-A is designed to accommodate limited partners that cannot participate in the main OEP IX vehicle due to regulatory, tax, or structural requirements—typically offshore institutions, non-U.S. investors, and institutional allocators requiring Cayman Islands domicile. The vehicle was closed in September 2025 contemporaneously with the closing of OEP IX at $3.25 billion.

OEP IX-A invests pari passu alongside One Equity Partners IX, L.P. in the same portfolio companies and transactions, applying the same value-oriented middle market private equity strategy. The fund targets industrial, healthcare, and technology sectors across North America and Europe, consistent with One Equity Partners' thematic investment approach. One Equity Partners pursues transformative business combinations and operational improvements in middle-market companies, targeting businesses with enterprise values in the $500 million to $3 billion range.

One Equity Partners was founded in 2001 as the private equity arm of JPMorgan and became independent in 2015. The firm manages approximately $16 billion in combined assets under management across its fund series, with offices in New York, Chicago, Frankfurt, and Amsterdam. The combined OEP IX and IX-A fundraise represents the largest capital raise in the firm's history, with LP commitments drawn from more than 30 countries including insurance companies, pension funds, sovereign wealth funds, and family offices. Kirkland & Ellis served as legal counsel for both vehicles.