Our solutions can be designed to fit your firm’s complex, unique, and shifting needs—all connected by a centralised data infrastructure.
Who we are.
-
1.44 trillion GBP
AUM/AUA*
-
$1.9 trillion
assets on SEI Wealth Platform**
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4,950
total global employees*
What we do.
Fund administration and back office services
Outsourcing solutions that can help turn your middle- and back-office into a competitive advantage.
Depositary services
We help safeguard your investors in Ireland and Luxembourg for UCITS, AIFMD, and alternative investments.
Investment manager technologies
Proprietary, integrated, leading-edge technology solutions that help streamline and unify your business so you can provide a first-class experience to your end clients.
Investment operations outsourcing
Take advantage of a comprehensive operating platform that can be customised to fit your business strategy and investment products.
Regulatory and compliance services
Regulatory compliance services and reporting for investment managers and institutions.
Managed IT services
Comprehensive offerings that strengthen cybersecurity, enhance network operations, and scale cloud infrastructure.
Featured insights.
We’re here to help.
Our teams are solving problems, working with our clients and communities around the world.
Important Information
The material on this webpage is provided for informational purposes only, for intended recipients who are professional investors and is not for further distribution.
This information is issued and approved by SEI Investments (Europe) Ltd (“SIEL”) 1st Floor, Alphabeta, 14-18 Finsbury Square, London EC2A 1BR.
SIEL is authorised and regulated by the Financial Conduct Authority in the United Kingdom. While considerable care has been taken to ensure the information contained within this webpage is accurate and up-to-date, no warranty is given as to the accuracy or completeness of any information and no liability is accepted for any errors or omissions in such information or any action taken on the basis of this information.
The views and opinions on this webpage are of SIEL only, which are subject to change. They should not be construed as investment advice.
The value of an investment and any income from it can go down as well as up. Investors may not get back the original amount invested.
*As at 31 March 2026. Currency conversion as of 31 March, 2026, 1 USD to 0.7563 GBP.
**As of 31 December 2025.