SEI Named One of the Best Places to Work by Philadelphia Business Journal

OAKS, Pa., Oct. 23 /PRNewswire-FirstCall/ --SEI (Nasdaq: SEIC) announced today
it has been named one of the Best Places to Work by the Philadelphia Business
Journal. The announcement, which appears in the newspaper's October 17, 2008
issue, highlights SEI among the Journal's annual ranking of Philadelphia area
businesses. Winning companies were selected solely based on the results of a
random employee survey conducted digitally by Quantum Market Research. Survey
questions addressed many different aspects of office culture, including
employee engagement, quality of supervisor/employee relationships, and
compensation satisfaction.

Each company that participated in the nomination process was initially
submitted for consideration by an employee for one of the following
categories: Small Company (10-50 employees), Medium Company (51-100
employees), Large Company (101-1,000 employees), Extra-Large Company (1,001 or
more employees), and Headquartered Elsewhere. SEI was chosen along with eight
other companies as a winner within the Extra-Large Company category.

"We're very proud of our employees," said Alfred P. West Jr., SEI's chairman
and chief executive officer. "The attitudes and opinions of our employees
make our corporate culture, work environment, client experience, and the
overall employee experience here at SEI positive and engaging."

About SEI
SEI (Nasdaq: SEIC) is a leading global provider of outsourced asset
management, investment processing and investment operations solutions. The
company's innovative solutions help corporations, financial institutions,
financial advisors, and affluent families create and manage wealth. As of
September 30, 2008, through its subsidiaries and partnerships in which the
company has a significant interest, SEI administers $431 billion in mutual
fund and pooled assets and manages $162 billion in assets. SEI serves clients,
conducts or is registered to conduct business and/or operations, from more
than 20 offices in over a dozen countries. For more information, visit
www.seic.com.

Company Contact: Media Contact:
Dana Grosser Elisabeth Behr
SEI Braithwaite Communications
+1-610-676-2459 +1-215-564-3200x113
dgrosser@seic.com jmiller@gobraithwaite.com

SOURCE SEI

Dana Grosser of SEI, +1-610-676-2459, dgrosser@seic.com, Elisabeth Behr of
Braithwaite Communications, +1-215-564-3200 x114, jmiller@gobraithwaite.com