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Sei Investments Co. – ‘8-K’ for 3/29/21 – ‘XML’

On:  Wednesday, 3/31/21, at 9:06am ET   ·   For:  3/29/21   ·   Accession #:  350894-21-17   ·   File #:  0-10200

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  As Of               Filer                 Filing    For·On·As Docs:Size

 3/31/21  Sei Investments Co.               8-K:7,9     3/29/21   13:1.3M

Current Report   —   Form 8-K
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 8-K         Current Report                                      HTML     27K 
 2: EX-99.1     Press Release                                       HTML      7K 
 9: R1          Cover                                               HTML     46K 
11: XML         IDEA XML File -- Filing Summary                      XML     12K 
 8: XML         XBRL Instance -- seic-20210329_htm                   XML     21K 
10: EXCEL       IDEA Workbook of Financial Reports                  XLSX      6K 
 4: EX-101.CAL  XBRL Calculations -- seic-20210329_cal               XML      7K 
 5: EX-101.DEF  XBRL Definitions -- seic-20210329_def                XML      9K 
 6: EX-101.LAB  XBRL Labels -- seic-20210329_lab                     XML     68K 
 7: EX-101.PRE  XBRL Presentations -- seic-20210329_pre              XML     33K 
 3: EX-101.SCH  XBRL Schema -- seic-20210329                         XSD     11K 
12: JSON        XBRL Instance as JSON Data -- MetaLinks               12±    17K 
13: ZIP         XBRL Zipped Folder -- 0000350894-21-000017-xbrl      Zip     39K 


‘XML’   —   IDEA XML File — Filing Summary


This Document is an IDEA XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<FilingSummary>
<Version> 3.21.1 </Version>
<ProcessingTime/>
<ReportFormat> html </ReportFormat>
<ContextCount> 1 </ContextCount>
<ElementCount> 96 </ElementCount>
<EntityCount> 1 </EntityCount>
<FootnotesReported> false </FootnotesReported>
<SegmentCount> 0 </SegmentCount>
<ScenarioCount> 0 </ScenarioCount>
<TuplesReported> false </TuplesReported>
<UnitCount> 0 </UnitCount>
<MyReports>
<Report instance="seic-20210329.htm">
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<HtmlFileName> R1.htm </HtmlFileName>
<LongName> 0001001 - Document - Cover </LongName>
<ReportType> Sheet </ReportType>
<Role> http://www.seic.com/role/Cover </Role>
<ShortName> Cover </ShortName>
<MenuCategory> Cover </MenuCategory>
<Position> 1 </Position>
</Report>
<Report>
<IsDefault> false </IsDefault>
<HasEmbeddedReports> false </HasEmbeddedReports>
<LongName> All Reports </LongName>
<ReportType> Book </ReportType>
<ShortName> All Reports </ShortName>
</Report>
</MyReports>
<InputFiles>
<File doctype="8-K" original="seic-20210329.htm"> seic-20210329.htm </File>
<File> form8-k32921exhibit991.htm </File>
<File> seic-20210329.xsd </File>
<File> seic-20210329_cal.xml </File>
<File> seic-20210329_def.xml </File>
<File> seic-20210329_lab.xml </File>
<File> seic-20210329_pre.xml </File>
</InputFiles>
<SupplementalFiles>
<File> seic-20210329_g1.jpg </File>
</SupplementalFiles>
<BaseTaxonomies>
<BaseTaxonomy> http://xbrl.sec.gov/dei/2020-01-31 </BaseTaxonomy>
</BaseTaxonomies>
<HasPresentationLinkbase> true </HasPresentationLinkbase>
<HasCalculationLinkbase> true </HasCalculationLinkbase>
</FilingSummary>

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Filing Submission 0000350894-21-000017   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

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