Solving problems is our foundation.
Powering the future is our mission.
What we do.
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Technology and operationsWe provide the foundation that powers your enterprise—linking platforms, data, and essential services to help everything run smoothly, securely, and at scale.
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Asset managementWe deliver personalized investment strategies and trusted expertise that help advisors, institutions, and families see the full picture—and act with confidence.
Who we serve.
Strategic partner spotlight.
Nuveen and SEI: Advancing retirement innovation.
How a 16-year collaboration grew from one fund to 95 funds and approximately $30 billion in assets.
TCW and SEI: Scaling across public and private markets.
How SEI and TCW built a long-term relationship to support growth across markets.
By the numbers.
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$1.9T
AUM/AUA*
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4,900
global employees**
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$8.1T
assets on our wealth management platforms***
Our insights on topics that matter.
Let’s move forward together.
*As of 12/31/25 through its subsidiaries and partnerships in which the company has a significant interest, SEI manages, advises, or administers approximately $1.9trillion in assets, including approximately $1.2 trillion in assets under administration and approximately $554.6 billion in assets under management, value in USD.
**As of 12/31/25.
***As of 12/31/25, value in USD.