| | | | | | | | | | | | | | | | | | | | | |
<?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-20210127.xsd" xlink:type="simple"/> |
| <context id="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127"> |
| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000350894 </identifier> |
| | | </entity> |
| | <period> |
| | | <startDate> 2021-01-27 </startDate> |
| | | <endDate> 2021-01-27 </endDate> |
| | | </period> |
| | </context> |
| <dei:EntityCentralIndexKey contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF80L2ZyYWc6NjY4YmM3NDIzNjI1NDAxMWIzMjc3YjNkNzhjNzQ4ZjkvdGFibGU6MjNjNDAyYTFlMzFiNDY0ZTllZTkzZDY5OTcwN2YyYmYvdGFibGVyYW5nZToyM2M0MDJhMWUzMWI0NjRlOWVlOTNkNjk5NzA3ZjJiZl8yLTEtMS0xLTA_2681b47f-3c86-410e-9def-2ab6dbe8f856"> 0000350894 </dei:EntityCentralIndexKey> |
| <dei:AmendmentFlag contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF80L2ZyYWc6NjY4YmM3NDIzNjI1NDAxMWIzMjc3YjNkNzhjNzQ4ZjkvdGFibGU6MjNjNDAyYTFlMzFiNDY0ZTllZTkzZDY5OTcwN2YyYmYvdGFibGVyYW5nZToyM2M0MDJhMWUzMWI0NjRlOWVlOTNkNjk5NzA3ZjJiZl81LTEtMS0xLTA_d254bce8-026f-466c-b496-edb7d7e9cb68"> false </dei:AmendmentFlag> |
| <dei:DocumentType contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDkx_08393f66-d7e6-4f7d-9aa3-14f750a0e31b"> 8-K </dei:DocumentType> |
| <dei:DocumentPeriodEndDate contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18yNTU_d097be3d-9b0c-4e9a-aab0-e96e9bffa578"> 2021-01-27 </dei:DocumentPeriodEndDate> |
| <dei:EntityRegistrantName contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDky_8d8449ef-ad1a-4619-a9ff-c89f245c9610"> SEI INVESTMENTS COMPANY </dei:EntityRegistrantName> |
| <dei:EntityIncorporationStateCountryCode contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6NzkwMzI0NjhlZTZlNDZiY2FmMzRmM2E5ZGU5M2MzZDUvdGFibGVyYW5nZTo3OTAzMjQ2OGVlNmU0NmJjYWYzNGYzYTlkZTkzYzNkNV8wLTAtMS0xLTA_e9dcab8b-0548-4abe-8bc1-c5b162f6065c"> PA </dei:EntityIncorporationStateCountryCode> |
| <dei:EntityFileNumber contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6NzkwMzI0NjhlZTZlNDZiY2FmMzRmM2E5ZGU5M2MzZDUvdGFibGVyYW5nZTo3OTAzMjQ2OGVlNmU0NmJjYWYzNGYzYTlkZTkzYzNkNV8wLTItMS0xLTA_02e54018-b1c9-4223-bd2d-02f0a4d85d95"> 0-10200 </dei:EntityFileNumber> |
| <dei:EntityTaxIdentificationNumber contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6NzkwMzI0NjhlZTZlNDZiY2FmMzRmM2E5ZGU5M2MzZDUvdGFibGVyYW5nZTo3OTAzMjQ2OGVlNmU0NmJjYWYzNGYzYTlkZTkzYzNkNV8wLTQtMS0xLTA_d75994cc-1ca0-4a5c-86d5-c8fa241bce68"> 23-1707341 </dei:EntityTaxIdentificationNumber> |
| <dei:EntityAddressAddressLine1 contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDkz_64451584-6fc7-4124-bea3-78a26b97ebca"> 1 Freedom Valley Drive </dei:EntityAddressAddressLine1> |
| <dei:EntityAddressCityOrTown contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDk1_cb43f1e9-deb5-4961-9cc0-7eb613fa83f6"> Oaks </dei:EntityAddressCityOrTown> |
| <dei:EntityAddressStateOrProvince contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDk0_bb9d4c71-55c7-4e2d-96f6-cf43aeaa5761"> PA </dei:EntityAddressStateOrProvince> |
| <dei:EntityAddressPostalZipCode contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDk2_b1479e89-dfd8-440a-8b27-fc7cebc43f1b"> 19456 </dei:EntityAddressPostalZipCode> |
| <dei:CityAreaCode contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDk3_71590f89-8cab-475a-bae7-34240df72704"> 610 </dei:CityAreaCode> |
| <dei:LocalPhoneNumber contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDg5_37a6a273-4b15-457a-b934-e2c2a28720fb"> 676-1000 </dei:LocalPhoneNumber> |
| <dei:WrittenCommunications contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6ZDc1MGQxZTZhMmZhNGZkMWI3ZGVhYTRkY2I4NWY0NzAvdGFibGVyYW5nZTpkNzUwZDFlNmEyZmE0ZmQxYjdkZWFhNGRjYjg1ZjQ3MF8wLTAtMS0xLTA_2f575409-23c2-41cc-9fbc-5b411fcf4214"> false </dei:WrittenCommunications> |
| <dei:SolicitingMaterial contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6NjY2ZjE5N2FlMjk5NDgxODg2MjEyMjBhOWZmNDA2M2EvdGFibGVyYW5nZTo2NjZmMTk3YWUyOTk0ODE4ODYyMTIyMGE5ZmY0MDYzYV8wLTAtMS0xLTA_c473c5aa-423a-4235-8c2b-73cae6c0f245"> false </dei:SolicitingMaterial> |
| <dei:PreCommencementTenderOffer contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6NWYxYjUwMThmYTJkNDQ1YWEwYzgxNzk5MjhkNDFiMmQvdGFibGVyYW5nZTo1ZjFiNTAxOGZhMmQ0NDVhYTBjODE3OTkyOGQ0MWIyZF8wLTAtMS0xLTA_1052f837-e4a3-417b-9224-792cfcbc5735"> false </dei:PreCommencementTenderOffer> |
| <dei:PreCommencementIssuerTenderOffer contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6MWQ5NDVkMWI4MTQ2NDk1ODk3YmI1OTkxZmRiMmZkZDAvdGFibGVyYW5nZToxZDk0NWQxYjgxNDY0OTU4OTdiYjU5OTFmZGIyZmRkMF8wLTAtMS0xLTA_3de28644-d733-4bad-b6bc-836bd4007acc"> false </dei:PreCommencementIssuerTenderOffer> |
| <dei:Security12bTitle contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6Y2JkYWZjMGYwOWYxNDlkNWE0ZDg2MTMxZjQ4MzY4NzQvdGFibGVyYW5nZTpjYmRhZmMwZjA5ZjE0OWQ1YTRkODYxMzFmNDgzNjg3NF8xLTAtMS0xLTA_cd0017fd-055e-405e-b0b9-8b0eee133614"> Common Stock, par value $0.01 per share </dei:Security12bTitle> |
| <dei:TradingSymbol contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6Y2JkYWZjMGYwOWYxNDlkNWE0ZDg2MTMxZjQ4MzY4NzQvdGFibGVyYW5nZTpjYmRhZmMwZjA5ZjE0OWQ1YTRkODYxMzFmNDgzNjg3NF8xLTItMS0xLTA_16acf8ad-0609-455e-b529-f4d95c673acf"> SEIC </dei:TradingSymbol> |
| <dei:SecurityExchangeName contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGFibGU6Y2JkYWZjMGYwOWYxNDlkNWE0ZDg2MTMxZjQ4MzY4NzQvdGFibGVyYW5nZTpjYmRhZmMwZjA5ZjE0OWQ1YTRkODYxMzFmNDgzNjg3NF8xLTQtMS0xLTA_182d6c79-58d3-4d2f-861b-8a9cbf7dc805"> NASDAQ </dei:SecurityExchangeName> |
| <dei:EntityEmergingGrowthCompany contextRef="ia3547f78fb344509baa4aedaa5650517_D20210127-20210127" id="id3VybDovL2RvY3MudjEvZG9jOmE2YjhhMjVhNDUyYjRhNTk5MTNlNDhlNzRhZTdmNjI4L3NlYzphNmI4YTI1YTQ1MmI0YTU5OTEzZTQ4ZTc0YWU3ZjYyOF8xL2ZyYWc6MTYzY2EzZGRhMDBhNGI3NGEzMzA4YTUyOWExN2M4ZDcvdGV4dHJlZ2lvbjoxNjNjYTNkZGEwMGE0Yjc0YTMzMDhhNTI5YTE3YzhkN18xNDkw_161bd828-9700-41a5-b31d-a74fa387a765"> false </dei:EntityEmergingGrowthCompany> |
| </xbrl> |