| | | | | | | | | | | | | | | | | | | | | |
<?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/2020-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink"> |
| <link:schemaRef xlink:href="seic-20210329.xsd" xlink:type="simple"/> |
| <context id="i2067de12ac30452c99bda53b3437166a_D20210329-20210329"> |
| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000350894 </identifier> |
| | | </entity> |
| | <period> |
| | | <startDate> 2021-03-29 </startDate> |
| | | <endDate> 2021-03-29 </endDate> |
| | | </period> |
| | </context> |
| <dei:EntityCentralIndexKey contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl80L2ZyYWc6NDhiNTVhZWJiNThiNGQ5NGFiY2FlOTQxZDcwYzJiMzgvdGFibGU6NzJmNjU0YmM1OTVhNDQ2OThlOWFhZGIzNmU4OTdjMDIvdGFibGVyYW5nZTo3MmY2NTRiYzU5NWE0NDY5OGU5YWFkYjM2ZTg5N2MwMl8yLTEtMS0xLTE5_4b95095e-5ff4-4017-9237-e1ce0bb3b20e"> 0000350894 </dei:EntityCentralIndexKey> |
| <dei:AmendmentFlag contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl80L2ZyYWc6NDhiNTVhZWJiNThiNGQ5NGFiY2FlOTQxZDcwYzJiMzgvdGFibGU6NzJmNjU0YmM1OTVhNDQ2OThlOWFhZGIzNmU4OTdjMDIvdGFibGVyYW5nZTo3MmY2NTRiYzU5NWE0NDY5OGU5YWFkYjM2ZTg5N2MwMl81LTEtMS0xLTIz_f3487089-241c-4abc-ae97-d7513f1e3de4"> false </dei:AmendmentFlag> |
| <dei:DocumentType contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDg5_6f32e435-2378-4e43-84cb-b93f22f2d474"> 8-K </dei:DocumentType> |
| <dei:DocumentPeriodEndDate contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8yNTU_98e7a9ca-9e18-48f1-b4ea-24bb77828262"> 2021-03-29 </dei:DocumentPeriodEndDate> |
| <dei:EntityRegistrantName contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDkw_2b155675-e4d2-457e-afb7-df214ca78f95"> SEI INVESTMENTS COMPANY </dei:EntityRegistrantName> |
| <dei:EntityIncorporationStateCountryCode contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6OTU3MGVlM2Q3MTk1NGVlMzgwZTM4Yzg0ZThjMzM5NWQvdGFibGVyYW5nZTo5NTcwZWUzZDcxOTU0ZWUzODBlMzhjODRlOGMzMzk1ZF8wLTAtMS0xLTA_68cf7801-2569-4256-b593-3f557fb27af0"> PA </dei:EntityIncorporationStateCountryCode> |
| <dei:EntityFileNumber contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6OTU3MGVlM2Q3MTk1NGVlMzgwZTM4Yzg0ZThjMzM5NWQvdGFibGVyYW5nZTo5NTcwZWUzZDcxOTU0ZWUzODBlMzhjODRlOGMzMzk1ZF8wLTItMS0xLTA_01091559-bb8a-454c-abd1-14fbf65c7780"> 0-10200 </dei:EntityFileNumber> |
| <dei:EntityTaxIdentificationNumber contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6OTU3MGVlM2Q3MTk1NGVlMzgwZTM4Yzg0ZThjMzM5NWQvdGFibGVyYW5nZTo5NTcwZWUzZDcxOTU0ZWUzODBlMzhjODRlOGMzMzk1ZF8wLTQtMS0xLTA_21a86913-f5f9-4cae-931b-65c6bf5a0638"> 23-1707341 </dei:EntityTaxIdentificationNumber> |
| <dei:EntityAddressAddressLine1 contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDky_f46af43d-2da6-41e1-a741-b64e38fded55"> 1 Freedom Valley Drive </dei:EntityAddressAddressLine1> |
| <dei:EntityAddressCityOrTown contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDkz_19b26bf9-b76a-4d6c-bc50-21729743da5a"> Oaks </dei:EntityAddressCityOrTown> |
| <dei:EntityAddressStateOrProvince contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDk0_372adfc8-a215-42cc-b12b-0aca1c6a1af8"> PA </dei:EntityAddressStateOrProvince> |
| <dei:EntityAddressPostalZipCode contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDk1_393d85e2-c083-4b16-8172-79a283b1ca7a"> 19456 </dei:EntityAddressPostalZipCode> |
| <dei:CityAreaCode contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDk2_9e38d0dc-5ef0-4f58-a303-1ec8e39aa74f"> 610 </dei:CityAreaCode> |
| <dei:LocalPhoneNumber contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDkx_2c942b02-08d2-4625-b04b-ae742a4bdd36"> 676-1000 </dei:LocalPhoneNumber> |
| <dei:WrittenCommunications contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6MzEyMDQ2NjA3N2Q0NGJiYzgxMjU4YTRiYWQyMmQ5NGIvdGFibGVyYW5nZTozMTIwNDY2MDc3ZDQ0YmJjODEyNThhNGJhZDIyZDk0Yl8wLTAtMS0xLTA_8bbb0e74-c9ff-48fa-a05a-8e80185a77f1"> false </dei:WrittenCommunications> |
| <dei:SolicitingMaterial contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6Y2UyMTRiNDAzZThhNDU0M2IxNzYwZDNhMzIyYjA5NmUvdGFibGVyYW5nZTpjZTIxNGI0MDNlOGE0NTQzYjE3NjBkM2EzMjJiMDk2ZV8wLTAtMS0xLTA_e092f673-2c91-45f7-92b3-85951689b3ef"> false </dei:SolicitingMaterial> |
| <dei:PreCommencementTenderOffer contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6OTQzOGZhNTg1MDEwNDQ4YzliNzVlZDk2MGE5OWUzOTkvdGFibGVyYW5nZTo5NDM4ZmE1ODUwMTA0NDhjOWI3NWVkOTYwYTk5ZTM5OV8wLTAtMS0xLTA_abd971f0-5c4a-43c7-bccf-6b8e1b4a7d73"> false </dei:PreCommencementTenderOffer> |
| <dei:PreCommencementIssuerTenderOffer contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6OTY0NWYxYjQxZDZkNDBiYzlhNTVmMjI0NDFlOTVjYjQvdGFibGVyYW5nZTo5NjQ1ZjFiNDFkNmQ0MGJjOWE1NWYyMjQ0MWU5NWNiNF8wLTAtMS0xLTA_0dd7a9ec-7943-4720-aecc-34c8241ba1f1"> false </dei:PreCommencementIssuerTenderOffer> |
| <dei:Security12bTitle contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6ZGQ5ODkyMzIyOWFmNDhmZmE4Nzc0MDc0N2IwZjFhZTUvdGFibGVyYW5nZTpkZDk4OTIzMjI5YWY0OGZmYTg3NzQwNzQ3YjBmMWFlNV8xLTAtMS0xLTA_2c006255-104d-44ee-bafb-63125fce8d02"> Common Stock, par value $0.01 per share </dei:Security12bTitle> |
| <dei:TradingSymbol contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6ZGQ5ODkyMzIyOWFmNDhmZmE4Nzc0MDc0N2IwZjFhZTUvdGFibGVyYW5nZTpkZDk4OTIzMjI5YWY0OGZmYTg3NzQwNzQ3YjBmMWFlNV8xLTItMS0xLTA_6b864f0d-f2f4-487b-8a3d-8004624ab965"> SEIC </dei:TradingSymbol> |
| <dei:SecurityExchangeName contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGFibGU6ZGQ5ODkyMzIyOWFmNDhmZmE4Nzc0MDc0N2IwZjFhZTUvdGFibGVyYW5nZTpkZDk4OTIzMjI5YWY0OGZmYTg3NzQwNzQ3YjBmMWFlNV8xLTQtMS0xLTA_82c5ceb7-50c9-439d-a0ca-314160cff16f"> NASDAQ </dei:SecurityExchangeName> |
| <dei:EntityEmergingGrowthCompany contextRef="i2067de12ac30452c99bda53b3437166a_D20210329-20210329" id="id3VybDovL2RvY3MudjEvZG9jOjgwODU4MGJlNWRkZTRhYzY5YzE5MTE2NWVlM2FmOGMyL3NlYzo4MDg1ODBiZTVkZGU0YWM2OWMxOTExNjVlZTNhZjhjMl8xL2ZyYWc6ZWY0MTA2ZTg2NjRiNDEwZDg4YmI4ZWYwYmQyYTNmZGEvdGV4dHJlZ2lvbjplZjQxMDZlODY2NGI0MTBkODhiYjhlZjBiZDJhM2ZkYV8xNDk3_eaf3b743-ff5e-42b4-8fe2-885649eeb436"> false </dei:EntityEmergingGrowthCompany> |
| </xbrl> |