BlackFin Acquires Majority Stake in Arendt Investor Services to Fuel European Expansion

Arendt Investor Services (AIS) is poised for its next growth phase after BlackFin Capital Partners agreed to acquire a majority stake in the company, subject to CSSF approval and standard closing conditions. Arendt, the Luxembourg-based law firm and consulting powerhouse, will retain a significant stake, ensuring continuity and strategic alignment. The deal also encompasses the third-party AIFM, AManco, highlighting the transaction’s breadth.

The partnership is designed to accelerate AIS’ international expansion and reinforce its position in Luxembourg, Europe’s largest investment fund hub. With over €7.3 trillion in assets under management in 2025 and nearly 60% of alternative investment funds domiciled there, Luxembourg offers the regulatory stability and innovation ecosystem essential for fund administration and cross-border operations.

BlackFin brings a unique blend of financial services expertise, operational insight, and strategic vision to AIS. With a decade of investments in Luxembourg and a portfolio of over 100 European financial services ventures, BlackFin is well-positioned to guide AIS’ growth while maintaining its commitment to client service excellence and regulatory compliance.

“BlackFin’s sector expertise and operational experience will help us achieve our long-term objectives while preserving the quality of service our clients expect,” said AIS leadership. The firm aims to leverage the partnership to extend its technology and service offerings to new European markets.

Founded 15 years ago, AIS has grown into a comprehensive one-stop-shop for alternative asset managers, asset servicers, and family offices. Its service suite includes fund administration, corporate and governance services, operational AML and compliance, tax compliance, as well as third-party AIFM and depositary services. With a team of 320 professionals, AIS combines operational efficiency with investor-focused service, all under CSSF supervision and ISO 22301 certification.

By maintaining a meaningful stake, Arendt ensures AIS’ long-term vision remains aligned with the law firm’s consulting and legal services, preserving synergies while enabling ambitious growth.

“This partnership represents a milestone in AIS’ development strategy, positioning us to scale operations into new jurisdictions while continuing to deliver market-leading investor services,” said representatives from Arendt and BlackFin.

As Luxembourg continues to dominate Europe’s fund management landscape, partnerships like this underscore a broader trend: European financial services firms are increasingly combining local expertise with private equity support to accelerate technology-driven expansion and operational excellence. For AIS, this deal is not just a change in ownership—it’s a springboard for cross-border growth, innovation, and leadership in the investor services market.