0001036050-97-001105 11-K 1 19961231 19971202 NASD SEI CORP 0000350894 6211 231707341 PA 1231 11-K 34 000-10200 97731186 680 E SWEDESFORD RD WAYNE PA 19087-1658 6102541000 680 EAST SWEDESFORD ROAD WAYNE PA 19087 11-K 1 000103605097001105-001-seq1-11-k.txt FORM 11-K