SEI Investments (SEIC) 10-K 2004 FY Annual report

Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

NAME	JURISDICTION OF ORGANIZATION OR INCORPORATION
SEI Investments Distribution Co.		Pennsylvania
SEI Investments Management Corporation		Delaware
SEI, Inc.		Canada (Federal)
SEI Capital Limited		Canada (Federal)
SEI Investments Developments, Inc.		Delaware
SEI Investments Global Funds Services		Delaware
SEI Investments Fund Management		Delaware
SEI Investments Management Corporation Delaware, LLC		Delaware
SEI Trust Company		Pennsylvania
SEI Funds, Inc.		Delaware
SEI Investments, Inc.		Delaware
SEI Global Investments Corporation		Delaware
SEI Investments Canada Company		Canada (Federal)
SEI Advanced Capital Management, Inc.		Delaware
SEI Global Capital Investments, Inc.		Delaware
SEI Investments Global (Cayman), Ltd.		Cayman Islands, B. W. I.
SEI Investments Global, Limited		Ireland
SEI Investments Global Fund Services, Ltd.		Ireland
SEI Investments Argentina, S. A.		Argentina
SEI Global Holdings (Cayman) Inc.		Cayman Islands, B. W. I.
SEI Investments (South Africa) Limited		South Africa
SEI Primus Holding Corporation		Canada
SEI Investments Trustee & Custodial Services (Ireland) Limited		Ireland
SEI Private Trust Company		Pennsylvania
SEI Venture Capital Inc		Delaware
SEI Asset Korea Co., Ltd.		South Korea
SEI Investments Europe Limited		United Kingdom
SEI Investments (France) Company		France
SEI Investments – Unit Trust Management (UK) Ltd.		United Kingdom
Lartington Limited		Ireland
SEI Investments Management Company II		Delaware
SEI Investments Global (Bermuda) Ltd.		Bermuda
SEI SIMC Holdings, LLC		Delaware
SIMC Subsidiary, LLC		Delaware
SEI Global Nominee Ltd.		United Kingdom
SEI Insurance Group, Inc.		Pennsylvania
SEI Global Services, Inc.		Delaware
SEI Franchise, Inc.		Delaware
SEI Investments (Asia), Limited		Hong Kong