SEI Named to Deloitte's 2009 Greater Philadelphia Fast 50

Company Named For Second Year

OAKS, Pa., Oct. 28 /PRNewswire-FirstCall/ -- SEI (Nasdaq: SEIC) today announced that it has been named to the 2009 Greater Philadelphia Fast 50, Deloitte's ranking of the 50 fastest growing technology, life sciences, and cleantech companies in the Greater Philadelphia Region. This is the second time SEI has been recognized by Deloitte for its technology and growth. SEI was also name to the Fast 50 in 2006. Rankings are based on percentage of fiscal year revenue growth during the five year period from 2004-2008.

"With its impressive five-year growth, SEI has earned its position among the fastest growing technology, life sciences, and clean technology companies in the Greater Philadelphia region," said Michael Purcell, partner, Deloitte & Touche LLP. "Deloitte is proud to honor SEI for its achievement."

Overall, the 2009 Greater Philadelphia Fast 50 award winners had growth rates ranging from 80 to 4,984 percent over five years, with an average growth rate of 458 percent.

In order to be eligible for Greater Philadelphia Fast 50 recognition, companies must own proprietary intellectual property or proprietary technology that contributes to a significant portion of the company's operating revenues. Greater Philadelphia Fast 50 award eligibility requirements also include base-year operating revenues of at least $50,000, and current-year operating revenues of at least $5 million. Additionally, companies must be in business for a minimum of five years, and be headquartered in the Greater Philadelphia Region.

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, 2009, through its subsidiaries and partnerships in which the company has a significant interest, SEI administers $383 billion in mutual fund and pooled assets and manages $156 billion in assets. SEI serves clients, conducts or is registered to conduct business and/or operations, from numerous offices worldwide. For more information, visit www.seic.com.

About Deloitte

As used in this document, "Deloitte" means Deloitte LLP. Please see www.deloitte.com/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

SOURCE SEI

Released October 28, 2009