
UK-based private equity firm AlpInvest Partners has raised $4.1bn for its AlpInvest Co-Investment Fund IX (ACF IX).
ACF IX surpasses its predecessor fund, which was closed at $3.5bn in 2021.
Along with related strategic mandates, the fund has achieved its initial fundraising target.
AlpInvest co-investments managing director and co-head Roberto Torrini said: “Building on the success of our previous co-investment programs, we believe this latest fundraise underscores AlpInvest’s consistent performance and our reputation as a trusted co-investment partner.
“As the market continues to evolve, we remain focused on leveraging our scale, experience, and long-standing sponsor relationships to access highly attractive opportunities for our investors.”
ACF IX is designed to invest alongside high-quality general partners (GPs) in private equity buyouts and growth capital transactions across various industry sectors globally.
The fund has attracted commitments from over 185 new and existing investors, including public and corporate pension funds, financial institutions, asset managers, and foundations.
The investors are spread across Asia, Europe, Latin America, the Middle East, and North America.
AlpInvest co-investments managing director and co-head Richard Dunne said: “We are pleased to announce the close of ACF IX, which hit $4.1 billion and surpassed the size of our prior fund, with strong support from both existing and new investors.
“This highlights the depth of our co-investment platform, our strong track record, and our focused approach.
“We believe we are well-positioned to provide investors with the high-quality and diversified opportunities they’re looking for.”
Established in 1999, AlpInvest has committed over $19bn to more than 400 equity co-investments over the past 25 years.
The firm maintains a dedicated 37-person co-investment team based in Amsterdam, Hong Kong, and New York.
AlpInvest manages $89bn in assets and has more than 600 investors, as of 31 March 2025.
It has partnered with over 380 private equity managers and committed over $100bn across private equity funds, secondary transactions, portfolio financings, and co-investments.
AlpInvest employs over 230 people across its offices in Amsterdam, Hong Kong, London, New York, and Singapore.
AlpInvest global head Ruulke Bagijn said: “With the closing of ACF IX, we continue to build momentum across the AlpInvest platform.
“It’s a testament to our team’s expertise and commitment to delivering innovative and differentiated solutions that we believe create long-term value for our investors.”