SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000350894-21-000023
Filing Date
2021-04-26
Accepted
2021-04-26 12:42:49
Documents
203
Period of Report
2021-03-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-Q seic-20210331.htm   iXBRL 10-Q 1765357
2 CREDIT AGREEMENT sei-executioncreditagree.htm EX-10.27 521182
3 SECTION 302 CEO CERTIFICATION seic-331202110qex311.htm EX-31.1 7653
4 SECTION 302 CFO CERTIFICATION seic-331202110qex312.htm EX-31.2 7814
5 SECTION 906 CEO AND CFO CERTIFICATION seic-331202110qex32.htm EX-32 6404
11 GRAPHIC sei-executioncreditagree001.jpg GRAPHIC 89505
12 GRAPHIC sei-executioncreditagree002.jpg GRAPHIC 203759
13 GRAPHIC sei-executioncreditagree003.jpg GRAPHIC 216766
14 GRAPHIC sei-executioncreditagree004.jpg GRAPHIC 221992
15 GRAPHIC sei-executioncreditagree005.jpg GRAPHIC 211302
16 GRAPHIC sei-executioncreditagree006.jpg GRAPHIC 118028
17 GRAPHIC sei-executioncreditagree007.jpg GRAPHIC 268458
18 GRAPHIC sei-executioncreditagree008.jpg GRAPHIC 200459
19 GRAPHIC sei-executioncreditagree009.jpg GRAPHIC 294675
20 GRAPHIC sei-executioncreditagree010.jpg GRAPHIC 277874
21 GRAPHIC sei-executioncreditagree011.jpg GRAPHIC 263851
22 GRAPHIC sei-executioncreditagree012.jpg GRAPHIC 309245
23 GRAPHIC sei-executioncreditagree013.jpg GRAPHIC 278925
24 GRAPHIC sei-executioncreditagree014.jpg GRAPHIC 286166
25 GRAPHIC sei-executioncreditagree015.jpg GRAPHIC 264100
26 GRAPHIC sei-executioncreditagree016.jpg GRAPHIC 195735
27 GRAPHIC sei-executioncreditagree017.jpg GRAPHIC 284928
28 GRAPHIC sei-executioncreditagree018.jpg GRAPHIC 346891
29 GRAPHIC sei-executioncreditagree019.jpg GRAPHIC 295309
30 GRAPHIC sei-executioncreditagree020.jpg GRAPHIC 269243
31 GRAPHIC sei-executioncreditagree021.jpg GRAPHIC 318772
32 GRAPHIC sei-executioncreditagree022.jpg GRAPHIC 269890
33 GRAPHIC sei-executioncreditagree023.jpg GRAPHIC 333216
34 GRAPHIC sei-executioncreditagree024.jpg GRAPHIC 296008
35 GRAPHIC sei-executioncreditagree025.jpg GRAPHIC 272899
36 GRAPHIC sei-executioncreditagree026.jpg GRAPHIC 230802
37 GRAPHIC sei-executioncreditagree027.jpg GRAPHIC 274060
38 GRAPHIC sei-executioncreditagree028.jpg GRAPHIC 250802
39 GRAPHIC sei-executioncreditagree029.jpg GRAPHIC 255119
40 GRAPHIC sei-executioncreditagree030.jpg GRAPHIC 253768
41 GRAPHIC sei-executioncreditagree031.jpg GRAPHIC 251189
42 GRAPHIC sei-executioncreditagree032.jpg GRAPHIC 281313
43 GRAPHIC sei-executioncreditagree033.jpg GRAPHIC 282800
44 GRAPHIC sei-executioncreditagree034.jpg GRAPHIC 299056
45 GRAPHIC sei-executioncreditagree035.jpg GRAPHIC 254879
46 GRAPHIC sei-executioncreditagree036.jpg GRAPHIC 302630
47 GRAPHIC sei-executioncreditagree037.jpg GRAPHIC 302640
48 GRAPHIC sei-executioncreditagree038.jpg GRAPHIC 323728
49 GRAPHIC sei-executioncreditagree039.jpg GRAPHIC 345651
50 GRAPHIC sei-executioncreditagree040.jpg GRAPHIC 299353
51 GRAPHIC sei-executioncreditagree041.jpg GRAPHIC 337084
52 GRAPHIC sei-executioncreditagree042.jpg GRAPHIC 339536
53 GRAPHIC sei-executioncreditagree043.jpg GRAPHIC 344353
54 GRAPHIC sei-executioncreditagree044.jpg GRAPHIC 280806
55 GRAPHIC sei-executioncreditagree045.jpg GRAPHIC 338194
56 GRAPHIC sei-executioncreditagree046.jpg GRAPHIC 328885
57 GRAPHIC sei-executioncreditagree047.jpg GRAPHIC 356846
58 GRAPHIC sei-executioncreditagree048.jpg GRAPHIC 331588
59 GRAPHIC sei-executioncreditagree049.jpg GRAPHIC 356565
60 GRAPHIC sei-executioncreditagree050.jpg GRAPHIC 298717
61 GRAPHIC sei-executioncreditagree051.jpg GRAPHIC 338411
62 GRAPHIC sei-executioncreditagree052.jpg GRAPHIC 327616
63 GRAPHIC sei-executioncreditagree053.jpg GRAPHIC 266945
64 GRAPHIC sei-executioncreditagree054.jpg GRAPHIC 298250
65 GRAPHIC sei-executioncreditagree055.jpg GRAPHIC 362573
66 GRAPHIC sei-executioncreditagree056.jpg GRAPHIC 331345
67 GRAPHIC sei-executioncreditagree057.jpg GRAPHIC 317210
68 GRAPHIC sei-executioncreditagree058.jpg GRAPHIC 346327
69 GRAPHIC sei-executioncreditagree059.jpg GRAPHIC 334201
70 GRAPHIC sei-executioncreditagree060.jpg GRAPHIC 318421
71 GRAPHIC sei-executioncreditagree061.jpg GRAPHIC 303406
72 GRAPHIC sei-executioncreditagree062.jpg GRAPHIC 336342
73 GRAPHIC sei-executioncreditagree063.jpg GRAPHIC 308983
74 GRAPHIC sei-executioncreditagree064.jpg GRAPHIC 274477
75 GRAPHIC sei-executioncreditagree065.jpg GRAPHIC 300277
76 GRAPHIC sei-executioncreditagree066.jpg GRAPHIC 321657
77 GRAPHIC sei-executioncreditagree067.jpg GRAPHIC 281952
78 GRAPHIC sei-executioncreditagree068.jpg GRAPHIC 330135
79 GRAPHIC sei-executioncreditagree069.jpg GRAPHIC 293521
80 GRAPHIC sei-executioncreditagree070.jpg GRAPHIC 323901
81 GRAPHIC sei-executioncreditagree071.jpg GRAPHIC 300456
82 GRAPHIC sei-executioncreditagree072.jpg GRAPHIC 272892
83 GRAPHIC sei-executioncreditagree073.jpg GRAPHIC 210122
84 GRAPHIC sei-executioncreditagree074.jpg GRAPHIC 264125
85 GRAPHIC sei-executioncreditagree075.jpg GRAPHIC 327097
86 GRAPHIC sei-executioncreditagree076.jpg GRAPHIC 319755
87 GRAPHIC sei-executioncreditagree077.jpg GRAPHIC 324810
88 GRAPHIC sei-executioncreditagree078.jpg GRAPHIC 311255
89 GRAPHIC sei-executioncreditagree079.jpg GRAPHIC 315240
90 GRAPHIC sei-executioncreditagree080.jpg GRAPHIC 297141
91 GRAPHIC sei-executioncreditagree081.jpg GRAPHIC 314570
92 GRAPHIC sei-executioncreditagree082.jpg GRAPHIC 302363
93 GRAPHIC sei-executioncreditagree083.jpg GRAPHIC 292967
94 GRAPHIC sei-executioncreditagree084.jpg GRAPHIC 308748
95 GRAPHIC sei-executioncreditagree085.jpg GRAPHIC 316236
96 GRAPHIC sei-executioncreditagree086.jpg GRAPHIC 294243
97 GRAPHIC sei-executioncreditagree087.jpg GRAPHIC 228312
98 GRAPHIC sei-executioncreditagree088.jpg GRAPHIC 263779
99 GRAPHIC sei-executioncreditagree089.jpg GRAPHIC 292573
100 GRAPHIC sei-executioncreditagree090.jpg GRAPHIC 298567
101 GRAPHIC sei-executioncreditagree091.jpg GRAPHIC 192304
102 GRAPHIC sei-executioncreditagree092.jpg GRAPHIC 233208
103 GRAPHIC sei-executioncreditagree093.jpg GRAPHIC 317127
104 GRAPHIC sei-executioncreditagree094.jpg GRAPHIC 322277
105 GRAPHIC sei-executioncreditagree095.jpg GRAPHIC 339917
106 GRAPHIC sei-executioncreditagree096.jpg GRAPHIC 267260
107 GRAPHIC sei-executioncreditagree097.jpg GRAPHIC 292029
108 GRAPHIC sei-executioncreditagree098.jpg GRAPHIC 342036
109 GRAPHIC sei-executioncreditagree099.jpg GRAPHIC 348443
110 GRAPHIC sei-executioncreditagree100.jpg GRAPHIC 378427
111 GRAPHIC sei-executioncreditagree101.jpg GRAPHIC 280501
112 GRAPHIC sei-executioncreditagree102.jpg GRAPHIC 340063
113 GRAPHIC sei-executioncreditagree103.jpg GRAPHIC 181353
114 GRAPHIC sei-executioncreditagree104.jpg GRAPHIC 234213
115 GRAPHIC sei-executioncreditagree105.jpg GRAPHIC 314882
116 GRAPHIC sei-executioncreditagree106.jpg GRAPHIC 248930
117 GRAPHIC sei-executioncreditagree107.jpg GRAPHIC 354644
118 GRAPHIC sei-executioncreditagree108.jpg GRAPHIC 360384
119 GRAPHIC sei-executioncreditagree109.jpg GRAPHIC 321695
120 GRAPHIC sei-executioncreditagree110.jpg GRAPHIC 336776
121 GRAPHIC sei-executioncreditagree111.jpg GRAPHIC 291297
122 GRAPHIC sei-executioncreditagree112.jpg GRAPHIC 283229
123 GRAPHIC sei-executioncreditagree113.jpg GRAPHIC 348878
124 GRAPHIC sei-executioncreditagree114.jpg GRAPHIC 325353
125 GRAPHIC sei-executioncreditagree115.jpg GRAPHIC 365257
126 GRAPHIC sei-executioncreditagree116.jpg GRAPHIC 294883
127 GRAPHIC sei-executioncreditagree117.jpg GRAPHIC 362442
128 GRAPHIC sei-executioncreditagree118.jpg GRAPHIC 338795
129 GRAPHIC sei-executioncreditagree119.jpg GRAPHIC 281460
130 GRAPHIC sei-executioncreditagree120.jpg GRAPHIC 90328
131 GRAPHIC sei-executioncreditagree121.jpg GRAPHIC 47732
132 GRAPHIC sei-executioncreditagree122.jpg GRAPHIC 44012
133 GRAPHIC sei-executioncreditagree123.jpg GRAPHIC 37029
134 GRAPHIC sei-executioncreditagree124.jpg GRAPHIC 35219
135 GRAPHIC sei-executioncreditagree125.jpg GRAPHIC 33931
136 GRAPHIC sei-executioncreditagree126.jpg GRAPHIC 38290
137 GRAPHIC sei-executioncreditagree127.jpg GRAPHIC 33477
138 GRAPHIC seic-20210331_g1.jpg GRAPHIC 37183
  Complete submission text file 0000350894-21-000023.txt   57410455

Data Files

Seq Description Document Type Size
6 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT seic-20210331.xsd EX-101.SCH 43740
7 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT seic-20210331_cal.xml EX-101.CAL 118472
8 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT seic-20210331_def.xml EX-101.DEF 236246
9 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT seic-20210331_lab.xml EX-101.LAB 596133
10 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT seic-20210331_pre.xml EX-101.PRE 390155
139 EXTRACTED XBRL INSTANCE DOCUMENT seic-20210331_htm.xml XML 1513369
Mailing Address 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100
Business Address 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000
SEI INVESTMENTS CO (Filer) CIK: 0000350894 (see all company filings)

IRS No.: 231707341 | State of Incorp.: PA | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 000-10200 | Film No.: 21852965
SIC: 6211 Security Brokers, Dealers & Flotation Companies