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SEIC

Sei Investments Co
$91.43 +1.38 (+1.53%) At close · Jul 2
Market Cap
$11.00B
Shares
120,272,976

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 567
Total Value: $6,590,206,155
Total Shares: 83,983,457
Showing 1–100 of 572 holdings by value · page 1 of 6

Institutional Ownership Trend

26 quarters

Superinvestors Holding SEIC

All superinvestors →
Ray Dalio $18,258,007 Thomas Gayner $13,591,004 Joel Greenblatt $1,142,130

Holder Concentration

Across 567 13F filers
Top Holder
12.0%
Jun 2023 → Mar 2026 · range 12.0% – 13.0%
of institutional value
Top 5
38.6%
Jun 2023 → Mar 2026 · range 38.6% – 49.2%
of institutional value
Top 10
52.8%
Jun 2023 → Mar 2026 · range 52.8% – 62.5%
of institutional value
HHI
418
Jun 2023 → Mar 2026 · range 418 – 582
Broadly held
Showing 100 of 572
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $793,358,137 12.04% 10,110,337
Large LOOMIS SAYLES & CO L P $677,108,134 10.27% 8,628,879
Mega MORGAN STANLEY $376,050,127 5.71% 4,792,279
Mega VANGUARD CAPITAL MANAGEMENT LLC $372,082,454 5.65% 4,741,716
Mega STATE STREET CORP $328,410,917 4.98% 4,185,178
Mega BANK OF AMERICA CORP /DE/ Bank $229,172,104 3.48% 2,920,506
Mega GEODE CAPITAL MANAGEMENT, LLC $222,096,151 3.37% 2,830,332
Large LORD, ABBETT & CO. LLC $172,977,620 2.62% 2,204,379
Mega FMR LLC $164,198,395 2.49% 2,092,499
Mega DIMENSIONAL FUND ADVISORS LP $146,989,845 2.23% 1,873,198
Mega FIRST TRUST ADVISORS LP $143,024,835 2.17% 1,822,669
Large Beutel, Goodman & Co Ltd. $139,139,394 2.11% 1,773,154
Large Boston Partners $138,894,959 2.11% 1,770,039
Large Caisse de depot et placement du Quebec $94,014,043 1.43% 1,198,089
Mega Invesco Ltd. $89,879,846 1.36% 1,145,404
Large Boston Trust Walden Corp $81,587,691 1.24% 1,039,731
Mid ROYCE & ASSOCIATES LP $78,191,902 1.19% 996,456
Mega FRANKLIN RESOURCES INC $77,144,873 1.17% 983,113
Mega Bank of New York Mellon Corp Bank $73,471,610 1.11% 936,302
Mega NORTHERN TRUST CORP Bank $71,062,978 1.08% 905,607
Mega AMERIPRISE FINANCIAL INC $68,233,509 1.04% 869,549
Large Clark Capital Management Group, Inc. $65,745,697 1.00% 837,845
Mid AMERICAN CAPITAL MANAGEMENT INC $60,313,219 0.92% 768,615
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $54,652,236 0.83% 696,473
Mega VANGUARD FIDUCIARY TRUST CO Bank $46,302,008 0.70% 590,060
Mega RAYMOND JAMES FINANCIAL INC $44,897,629 0.68% 572,163
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $44,568,370 0.68% 567,967
Mid First Financial Bankshares Inc $43,486,347 0.66% 554,178
Large PFA Pension, Forsikringsaktieselskab Pension $40,750,334 0.62% 519,311
Mega ENVESTNET ASSET MANAGEMENT INC $39,119,021 0.59% 498,522
Large NATIXIS ADVISORS, LLC $36,870,228 0.56% 469,864
Mid Prana Capital Management, LP $36,428,991 0.55% 464,241
Mega JPMORGAN CHASE & CO $36,226,456 0.55% 461,660
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $35,775,566 0.54% 455,914
Mega VICTORY CAPITAL MANAGEMENT INC $33,553,065 0.51% 427,591
Mega AQR CAPITAL MANAGEMENT LLC $32,960,692 0.50% 420,042
Mega ROYAL BANK OF CANADA Bank $32,694,523 0.50% 416,650
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $32,317,947 0.49% 411,851
Large RENAISSANCE TECHNOLOGIES LLC $31,374,346 0.48% 399,826
Large Quantinno Capital Management LP $30,003,867 0.46% 382,361
Mega BARCLAYS PLC $29,895,263 0.45% 380,977
Large Man Group plc $28,320,606 0.43% 360,910
Large Connor, Clark & Lunn Investment Management Ltd. $26,877,152 0.41% 342,515
Large Thrivent Financial for Lutherans $25,548,889 0.39% 325,588
Mega GOLDMAN SACHS GROUP INC $25,434,402 0.39% 324,129
Mid Arbejdsmarkedets Tillaegspension Pension $25,378,610 0.39% 323,418
Mega UBS Group AG $24,843,993 0.38% 316,605
Mega RHUMBLINE ADVISERS $24,285,444 0.37% 309,487
Large ProShare Advisors LLC $23,590,593 0.36% 300,632
Large Retirement Systems of Alabama Pension $21,396,964 0.32% 272,677
Small JLB & ASSOCIATES INC $20,338,090 0.31% 259,183
Large Bridgewater Associates, LP $18,258,007 0.28% 232,675
Large Balyasny Asset Management L.P. $17,708,638 0.27% 225,674
Large PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO Pension $17,234,758 0.26% 219,635
Large ALPS ADVISORS INC $16,784,105 0.25% 213,892
Mega PRINCIPAL FINANCIAL GROUP INC $16,297,276 0.25% 207,688
Mega Swiss National Bank Bank $16,156,973 0.25% 205,900
Mega California Public Employees Retirement System Pension $15,573,862 0.24% 198,469
Small Leith Wheeler Investment Counsel Ltd. $15,399,659 0.23% 196,249
Mid Crestwood Advisors Group, LLC $15,396,834 0.23% 196,213
Mega Legal & General Group Plc $14,797,244 0.22% 188,572
Mega Amundi $14,796,537 0.22% 188,563
Mega Nuveen, LLC $13,748,806 0.21% 175,211
Large Markel Group Inc. $13,591,004 0.21% 173,200
Mega LPL Financial LLC $13,089,973 0.20% 166,815
Large Tidal Investments LLC $12,672,355 0.19% 161,493
Small Foyston, Gordon & Payne Inc $12,381,545 0.19% 157,787
Large Rockefeller Capital Management L.P. $11,971,773 0.18% 152,565
Large OSAIC HOLDINGS, INC. $11,902,484 0.18% 151,682
Mid Interval Partners, LP $10,689,732 0.16% 136,227
Large Janney Montgomery Scott LLC $10,429,290 0.16% 132,908
Large KLP KAPITALFORVALTNING AS $10,028,466 0.15% 127,800
Mega ALLIANCEBERNSTEIN L.P. $9,924,571 0.15% 126,476
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $9,876,705 0.15% 125,866
Large Qube Research & Technologies Ltd $9,808,122 0.15% 124,992
Mega MILLENNIUM MANAGEMENT LLC $9,319,489 0.14% 118,765
Large Creative Planning $9,167,414 0.14% 116,827
Mega BANK OF MONTREAL /CAN/ Bank $8,895,906 0.13% 113,367
Mega WELLS FARGO & COMPANY/MN $8,829,364 0.13% 112,519
Mid Vestcor Inc $8,758,664 0.13% 111,618
Large TRUIST FINANCIAL CORP $8,683,960 0.13% 110,666
Large KING LUTHER CAPITAL MANAGEMENT CORP $8,582,263 0.13% 109,370
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $8,560,370 0.13% 109,091
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $8,520,586 0.13% 108,584
Mega TD Asset Management Inc $8,439,919 0.13% 107,556
Mega VAN ECK ASSOCIATES CORP $8,335,083 0.13% 106,220
Large Robeco Institutional Asset Management B.V. $8,221,615 0.12% 104,774
Large TEACHER RETIREMENT SYSTEM OF TEXAS Pension $8,101,321 0.12% 103,241
Large STIFEL FINANCIAL CORP $7,942,575 0.12% 101,218
Small Kathmere Capital Management, LLC $7,806,587 0.12% 99,485
Mega AMERICAN CENTURY COMPANIES INC $7,472,698 0.11% 95,230
Large Corient Private Wealth LLC $7,241,839 0.11% 92,288
Mega PRICE T ROWE ASSOCIATES INC /MD/ $7,210,059 0.11% 91,883
Mega VANGUARD ASSET MANAGEMENT, Ltd $7,065,909 0.11% 90,046
Large STATE OF WISCONSIN INVESTMENT BOARD $6,814,727 0.10% 86,845
Mid MARTINGALE ASSET MANAGEMENT L P $6,711,539 0.10% 85,530
Small HAHN CAPITAL MANAGEMENT LLC $6,620,827 0.10% 84,374
Mega HSBC HOLDINGS PLC $6,549,418 0.10% 83,464
Mid Vest Financial, LLC $6,479,346 0.10% 82,571
Small Thrive Wealth Management, LLC $6,024,848 0.09% 76,779
Key facts CIK 350894 CUSIP 784117103 13F (30d) 25 filings 5 filers Visit website Investor relations

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