SEI has entered into a long-term agreement with Wilmington Trust to provide core processing and accounting systems for the firm's two advisory businesses, Wealth Advisory Services (WAS) and Corporate Client Services (CCS).

The advisory businesses generate more than 50 per cent of Wilmington Trust's revenue, and are seen as key elements of the company's growth strategies.

Wilmington’s WAS business offers personal trust, wealth planning, fiduciary, asset management, and family office services to high net worth individuals and families. The CCS business offers institutional trustee, agency, administrative, and retirement services.