0001193125-04-186411 10-Q 4 20040930 20041104 20041104 SEI INVESTMENTS CO 0000350894 6211 231707341 PA 1231 10-Q 34 000-10200 041120164 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 SEI INVESTMENT CO 20040806 SEI CORP 19920703 10-Q 1 d10q.htm FORM 10-Q EX-31.1 2 dex311.htm SECTION 302 CEO CERTIFICATION EX-31.2 3 dex312.htm SECTION 302 CFO CERTIFICATION EX-32 4 dex32.htm SECTION 906 CEO AND CFO CERTIFICATION