| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<xbrl xml:lang="en-US" xmlns="http://www.xbrl.org/2003/instance" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink"> |
| <link:schemaRef xlink:href="seic-20201208.xsd" xlink:type="simple"/> |
| <context id="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208"> |
| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000350894 </identifier> |
| | | </entity> |
| | <period> |
| | | <startDate> 2020-12-08 </startDate> |
| | | <endDate> 2020-12-08 </endDate> |
| | | </period> |
| | </context> |
| <dei:EntityCentralIndexKey contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl80L2ZyYWc6MzdjZGIyYzdlODg2NGQwZjg0NGFlZjAzNGRhOTA3YzYvdGFibGU6M2NlMmNmMDU0ZGQ0NDkwYjgyOTEwYzA2Yjg1ZGNmM2IvdGFibGVyYW5nZTozY2UyY2YwNTRkZDQ0OTBiODI5MTBjMDZiODVkY2YzYl8yLTEtMS0xLTA_c333aa80-0134-4a47-bfc5-ba820b6eecc2"> 0000350894 </dei:EntityCentralIndexKey> |
| <dei:AmendmentFlag contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl80L2ZyYWc6MzdjZGIyYzdlODg2NGQwZjg0NGFlZjAzNGRhOTA3YzYvdGFibGU6M2NlMmNmMDU0ZGQ0NDkwYjgyOTEwYzA2Yjg1ZGNmM2IvdGFibGVyYW5nZTozY2UyY2YwNTRkZDQ0OTBiODI5MTBjMDZiODVkY2YzYl81LTEtMS0xLTA_8d5f30a9-52b2-463b-b637-4aa643432663"> false </dei:AmendmentFlag> |
| <dei:DocumentType contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNTAw_1b82d221-832c-4b49-94ab-f41d229b8640"> 8-K </dei:DocumentType> |
| <dei:DocumentPeriodEndDate contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8yNTU_53c83e2a-3d36-43f7-9130-5cfb89d1d1dd"> 2020-12-08 </dei:DocumentPeriodEndDate> |
| <dei:EntityRegistrantName contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk0_b1cc1ed3-3afd-43ef-a175-cce6093e0f10"> SEI INVESTMENTS COMPANY </dei:EntityRegistrantName> |
| <dei:EntityIncorporationStateCountryCode contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NWM5MDdmZGNlNTk2NDRmZTg5ZmU1N2M1ODM1NGVmMTUvdGFibGVyYW5nZTo1YzkwN2ZkY2U1OTY0NGZlODlmZTU3YzU4MzU0ZWYxNV8wLTAtMS0xLTA_e529293e-87b3-4a35-9614-89b0dcfd14e0"> PA </dei:EntityIncorporationStateCountryCode> |
| <dei:EntityFileNumber contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NWM5MDdmZGNlNTk2NDRmZTg5ZmU1N2M1ODM1NGVmMTUvdGFibGVyYW5nZTo1YzkwN2ZkY2U1OTY0NGZlODlmZTU3YzU4MzU0ZWYxNV8wLTItMS0xLTA_9be3ddf2-ee49-4871-9827-7d4c12f678c7"> 0-10200 </dei:EntityFileNumber> |
| <dei:EntityTaxIdentificationNumber contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NWM5MDdmZGNlNTk2NDRmZTg5ZmU1N2M1ODM1NGVmMTUvdGFibGVyYW5nZTo1YzkwN2ZkY2U1OTY0NGZlODlmZTU3YzU4MzU0ZWYxNV8wLTQtMS0xLTA_53edd2ac-b4bd-4fc5-a053-2087a6b3d474"> 23-1707341 </dei:EntityTaxIdentificationNumber> |
| <dei:EntityAddressAddressLine1 contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNTAx_b8dbbe33-c61b-41b4-8e4c-ac70c5c97b2d"> 1 Freedom Valley Drive </dei:EntityAddressAddressLine1> |
| <dei:EntityAddressCityOrTown contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNTAy_017c1072-05e0-49a9-b1f3-ed56bd5f9a4a"> Oaks </dei:EntityAddressCityOrTown> |
| <dei:EntityAddressStateOrProvince contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk1_9c231fef-b329-4b3d-a35d-5aab37692755"> PA </dei:EntityAddressStateOrProvince> |
| <dei:EntityAddressPostalZipCode contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk2_c8e54e8a-5e2c-4ca4-8c90-61f4575db4bc"> 19456 </dei:EntityAddressPostalZipCode> |
| <dei:CityAreaCode contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk3_3f7d2e82-2afd-4745-8fd8-c6e76d77fb9e"> 610 </dei:CityAreaCode> |
| <dei:LocalPhoneNumber contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk4_c3ac4ded-aacf-4cfc-97f3-d6942c0cf623"> 676-1000 </dei:LocalPhoneNumber> |
| <dei:WrittenCommunications contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6MTcwNmM4NTM5NDcyNGY1ODhjZjdkNTIzNTExOWY1ZTgvdGFibGVyYW5nZToxNzA2Yzg1Mzk0NzI0ZjU4OGNmN2Q1MjM1MTE5ZjVlOF8wLTAtMS0xLTA_080ea179-ca92-4703-bc30-336be8a50650"> false </dei:WrittenCommunications> |
| <dei:SolicitingMaterial contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NGFhN2Y3NTFmMGRmNGRlOWIzZWE3NzhmYTQ4ZDNjMDUvdGFibGVyYW5nZTo0YWE3Zjc1MWYwZGY0ZGU5YjNlYTc3OGZhNDhkM2MwNV8wLTAtMS0xLTA_504127d3-2785-4da4-af76-521e05ad5975"> false </dei:SolicitingMaterial> |
| <dei:PreCommencementTenderOffer contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6ZDBlNzhjODVhNDMxNDA2ZDk1ODdkMTE4MmM1OWNlYTQvdGFibGVyYW5nZTpkMGU3OGM4NWE0MzE0MDZkOTU4N2QxMTgyYzU5Y2VhNF8wLTAtMS0xLTA_0246c234-4a1d-44cd-8257-97e1efa3cd28"> false </dei:PreCommencementTenderOffer> |
| <dei:PreCommencementIssuerTenderOffer contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NDE2OGU2YjYzOWZhNDcyOGEzMDFkZmUyMGUwNWVhNDEvdGFibGVyYW5nZTo0MTY4ZTZiNjM5ZmE0NzI4YTMwMWRmZTIwZTA1ZWE0MV8wLTAtMS0xLTA_b6eab57a-7268-4261-a03d-869a8afa4d90"> false </dei:PreCommencementIssuerTenderOffer> |
| <dei:Security12bTitle contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NDY0ZjM0OTVkMDc4NDQ4N2JkNWEwNTMyMDI0ODhmNjEvdGFibGVyYW5nZTo0NjRmMzQ5NWQwNzg0NDg3YmQ1YTA1MzIwMjQ4OGY2MV8xLTAtMS0xLTA_bcb2854a-78db-4f62-8550-7b402ce375ee"> Common Stock, par value $0.01 per share </dei:Security12bTitle> |
| <dei:TradingSymbol contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NDY0ZjM0OTVkMDc4NDQ4N2JkNWEwNTMyMDI0ODhmNjEvdGFibGVyYW5nZTo0NjRmMzQ5NWQwNzg0NDg3YmQ1YTA1MzIwMjQ4OGY2MV8xLTItMS0xLTA_12aa0c2b-8d26-485d-8c46-3b3059a18a35"> SEIC </dei:TradingSymbol> |
| <dei:SecurityExchangeName contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGFibGU6NDY0ZjM0OTVkMDc4NDQ4N2JkNWEwNTMyMDI0ODhmNjEvdGFibGVyYW5nZTo0NjRmMzQ5NWQwNzg0NDg3YmQ1YTA1MzIwMjQ4OGY2MV8xLTQtMS0xLTA_32dea1e8-cbb8-456e-8443-8a46904be1e7"> NASDAQ </dei:SecurityExchangeName> |
| <dei:EntityEmergingGrowthCompany contextRef="i6b6135e90be2415fa6fb98c20e04dead_D20201208-20201208" id="id3VybDovL2RvY3MudjEvZG9jOjBlNTcxMjFhMGJjYjRhZWJiOWFjZTQwODVkM2IyN2ZmL3NlYzowZTU3MTIxYTBiY2I0YWViYjlhY2U0MDg1ZDNiMjdmZl8xL2ZyYWc6ZDkwZDdkNmVmZGFiNDQwMDhjOWI3NDAwMzc0YmI1ODIvdGV4dHJlZ2lvbjpkOTBkN2Q2ZWZkYWI0NDAwOGM5Yjc0MDAzNzRiYjU4Ml8xNDk5_38baf698-f4d4-40f1-8e46-e2827e9ee816"> false </dei:EntityEmergingGrowthCompany> |
| </xbrl> |