0001193125-08-214336 8-K 2 20081022 2.02 9.01 20081022 20081022 SEI INVESTMENTS CO 0000350894 6211 231707341 PA 1231 8-K 34 000-10200 081135149 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 SEI INVESTMENT CO 20040806 SEI CORP 19920703 8-K 1 d8k.htm SEI INVESTMENTS CO--FORM 8-K EX-99.1 2 dex991.htm PRESS RELEASE