Calastone, the largest global funds network and technology solutions provider to the wealth and asset management industry, announced it has entered into a definitive agreement to be acquired by SS&C Technologies Holdings, Inc., a global leader in investment and financial services software and solutions, in a transaction valued at approximately £766 million (which is approximately US $1.03 billion). The acquisition is subject to customary regulatory approvals and is expected to close in Q4 2025.

The transaction represents a significant milestone for Calastone, and a strong endorsement of the company’s network, technology and client relationships built by the team over the past 17 years. Upon completion, Calastone will operate as part of SS&C’s Global Investor & Distribution Solutions division, enabling the combined group to further scale innovation, service delivery, and operational efficiency across the global wealth and asset management ecosystem.

Founded in 2007, Calastone operates the world’s largest transaction network for investment funds, connecting over 4,500 financial organisations across 57 markets. The firm’s technology, products and infrastructure have transformed how firms automate and scale fund operations, creating efficiencies across trading, settlement, and distribution.

Calastone’s global fund network and technology complement SS&C’s leadership in fund administration, transfer agency services, AI and intelligent automation. By combining capabilities, the two companies will deliver a unified, real-time operating platform to reduce cost, complexity, and operational risk across the global fund ecosystem as well as shaping distribution. This strategic alignment enables enhanced distribution, investor servicing, and operational scalability – empowering asset and wealth managers to innovate, diversify products, and deliver better outcomes for investors worldwide.

“This is a proud moment for everyone at Calastone,” said Julien Hammerson, Calastone CEO. “SS&C’s global scale and deep expertise across fund services and technology will enable us to accelerate innovation and deliver new digital capabilities to the market. We look forward to working together to deliver transformational services to asset and wealth managers and drive growth. I am immensely grateful to the entire Calastone team for their dedication and to our clients for their continued trust.”

“We are excited to welcome Julien, the Calastone team and their valued clients to SS&C,” said Bill Stone, Chairman and CEO of SS&C Technologies. “Calastone has built an impressive network and platform, and together we will create a more connected, automated and intelligent global fund ecosystem. This combination reinforces our commitment to delivering innovative, scalable solutions to reduce complexity and enhance outcomes for the asset and wealth management industry.

The transaction follows Calastone’s successful partnership with global investment firm The Carlyle Group, who acquired a majority stake in Calastone in 2020. Since then, Calastone has delivered material growth and strategic diversification by expanding its international footprint, investing in and enhancing its product suite to address ETFs and digital investments through tokenisation.

Fernando Chueca, Managing Director on the Carlyle Europe Technology Partners investment advisory team, said: “We are pleased to have supported Calastone through such a transformational period of growth for the business. Its well-established technology network represents a differentiated, automated offering and we believe the business is well-positioned to build upon its market position and business momentum. We are confident that SS&C is the right partner to continue Calastone’s success, and we look forward to watching the company thrive in its next phase.”

Barclays served as exclusive financial advisor to Calastone. Linklaters and Mishcon De Reya served as legal advisors to Calastone in connection with the transaction

About Calastone