0001032210-03-000636 8-K 2 20030417 7 20030421 SEI CORP 0000350894 6211 231707341 PA 1231 8-K 34 000-10200 03657244 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 8-K 1 d8k.txt SEI INVESTMENTS COMPANY EX-99.1 3 dex991.txt PRESS RELEASE