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SEI Investments Co

SEIC
Exchange
Nasdaq
Industry
Security Brokers, Dealers & Flotation Companies
SEC CIK
0000350894

In the last 90 days, SEI Investments Co insiders filed 0 open-market purchases and 11 sales; 575 institutions reported holding it in 13F filings for Q2 2026, worth $7.94B in total; Markel Group is the only superinvestor holding it.

13F holders, Q1 2023

Institutional positions in SEI Investments Co as of Mar 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
444
+3 vs. Q4 2022
Shares held
92.9M
−484.0K (−0.5%) vs. Q4 2022
Total value
$5.36B
−$88.6M (−1.6%) vs. Q4 2022
New holders
41
140 more added
Sold out
38
176 more reduced

5 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting SEIC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2023: 444 institutions
Q1 2021: 443 institutionsQ2 2021: 440 institutionsQ3 2021: 446 institutionsQ4 2021: 472 institutionsQ1 2022: 465 institutionsQ2 2022: 456 institutionsQ3 2022: 433 institutionsQ4 2022: 446 institutionsQ1 2023: 444 institutionsQ2 2023: 458 institutionsQ3 2023: 462 institutionsQ4 2023: 491 institutionsQ1 2024: 475 institutionsQ2 2024: 493 institutionsQ3 2024: 502 institutionsQ4 2024: 540 institutionsQ1 2025: 546 institutionsQ2 2025: 564 institutionsQ3 2025: 550 institutionsQ4 2025: 562 institutionsQ1 2026: 569 institutionsQ2 2026: 575 institutions
Value heldQ1 2023: $5.36B
Q1 2021: $5.97BQ2 2021: $6.04BQ3 2021: $5.73BQ4 2021: $5.94BQ1 2022: $5.81BQ2 2022: $5.18BQ3 2022: $4.63BQ4 2022: $5.45BQ1 2023: $5.36BQ2 2023: $5.53BQ3 2023: $5.63BQ4 2023: $5.90BQ1 2024: $6.77BQ2 2024: $6.02BQ3 2024: $6.35BQ4 2024: $7.52BQ1 2025: $7.27BQ2 2025: $8.09BQ3 2025: $7.51BQ4 2025: $7.31BQ1 2026: $7.06BQ2 2026: $7.94B
Institutions holding SEIC and their total value by quarter
QuarterHoldersValue
Q2 2026575$7.94B
Q1 2026569$7.06B
Q4 2025562$7.31B
Q3 2025550$7.51B
Q2 2025564$8.09B
Q1 2025546$7.27B
Q4 2024540$7.52B
Q3 2024502$6.35B
Q2 2024493$6.02B
Q1 2024475$6.77B
Q4 2023491$5.90B
Q3 2023462$5.63B
Q2 2023458$5.53B
Q1 2023444$5.36B
Q4 2022446$5.45B
Q3 2022433$4.63B
Q2 2022456$5.18B
Q1 2022465$5.81B
Q4 2021472$5.94B
Q3 2021446$5.73B
Q2 2021440$6.04B
Q1 2021443$5.97B

Institutions, Q1 2023

Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q4 2022.

Institutions holding SEIC in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Captrust Financial Advisors20,717$1.19M0.01%−3,200−13.4%Reduced
Pensionfund Sabic20,500$1.18M0.41%−4,500−18.0%Reduced
Standard Life Aberdeen plc20,417$1.17M0.00%+8,430+70.3%Added
IFM Investors Pty Ltd20,361$1.17M0.02%+566+2.9%Added
Lafayette Investments, Inc.20,298$1.17M0.32%−495−2.4%Reduced
Nilsine Partners, LLC19,727$1.14M0.18%+19,727New
Donald L. Hagan, LLC19,596$1.13M0.62%+438+2.3%Added
Moors & Cabot, Inc.19,471$1.12M0.08%00.0%Unchanged
Panagora Asset Management Inc18,748$1.08M0.01%−365−1.9%Reduced
New Mexico Educational Retirement Board18,600$1.07M0.05%+2,200+13.4%Added
Utah Retirement Systems18,574$1.07M0.02%00.0%Unchanged
Tiedemann Advisors, LLC18,521$1.07M0.05%00.0%Unchanged
Valley National Advisers Inc18,028$1.06M0.19%−142−0.8%Reduced
TrimTabs Asset Management, LLC18,308$1.05M0.56%+2,380+14.9%Added
1832 Asset Management L.P.18,084$1.04M0.00%+4,565+33.8%Added
Handelsbanken Fonder AB18,000$1.04M0.01%00.0%Unchanged
TownSquare Capital, LLC17,936$1.03M0.02%+1,955+12.2%Added
Ashton Thomas Private Wealth, LLC17,783$1.02M0.09%+13+0.1%Added
Jane Street Group, LLC17,670$1.02M0.00%−1,067−5.7%Reduced
Oppenheimer Asset Management Inc.17,603$1.01M0.02%−417−2.3%Reduced
Cresset Asset Management, LLC16,976$977.0K0.02%−302−1.7%Reduced
Teachers Retirement System of the State of Kentucky16,652$958.0K0.01%00.0%Unchanged
Acrisure Capital Management, LLC16,512$950.3K0.96%+12,823+347.6%Added
Janus Henderson Group PLC16,415$944.4K0.00%−70.0%Reduced
Y-Intercept (Hong Kong) Ltd16,166$930.4K0.11%+439+2.8%Added
DnB Asset Management AS16,102$926.7K0.01%+331+2.1%Added
First Republic Investment Management, Inc.16,003$921.0K0.00%−2,599−14.0%Reduced
Baird Financial Group, Inc.15,997$920.6K0.00%+21+0.1%Added
Boston Financial Mangement LLC15,900$915.0K0.04%00.0%Unchanged
Advisor Group Holdings, Inc.15,889$913.2K0.00%−227−1.4%Reduced
Cubist Systematic Strategies, LLC15,489$891.4K0.01%+9,868+175.6%Added
Gulf International Bank (UK) Ltd15,480$890.0K0.02%−3,863−20.0%Reduced
Manchester Capital Management LLC15,030$865.0K0.11%+15,030New
Twin Tree Management, LP15,022$864.5K0.02%+10,829+258.3%Added
Investment Management Corp of Ontario14,884$856.6K0.04%00.0%Unchanged
Versor Investments LP14,772$850.1K0.11%−1,800−10.9%Reduced
Gould Capital, LLC14,465$832.5K0.64%−3,018−17.3%Reduced
M&T Bank Corp14,426$830.2K0.00%−3,278−18.5%Reduced
AE Wealth Management LLC14,387$828.0K0.01%+871+6.4%Added
Federated Hermes, Inc.14,227$818.8K0.00%−360−2.5%Reduced
Public Sector Pension Investment Board14,104$811.7K0.01%+1,587+12.7%Added
Ergoteles LLC13,765$792.2K0.03%+13,765New
Xponance, Inc.13,653$785.7K0.01%−7−0.1%Reduced
True Wealth Design, LLC13,032$750.0K0.31%−130−1.0%Reduced
Nissay Asset Management Corp12,909$742.9K0.01%−331−2.5%Reduced
Oak Thistle LLC12,750$733.8K0.43%+702+5.8%Added
Patton Albertson Miller Group, LLC11,800$679.1K0.12%00.0%Unchanged
JustInvest LLC11,691$672.8K0.02%+1,468+14.4%Added
TD Waterhouse Canada Inc.10,968$663.0K0.01%+213+2.0%Added
Intech Investment Management LLC11,241$646.9K0.01%−374−3.2%Reduced
Crossmark Global Holdings, Inc.11,088$639.0K0.02%−476−4.1%Reduced
Northwest Investment Counselors, LLC10,928$628.9K0.18%−299−2.7%Reduced
Commerce Bank10,848$624.3K0.00%00.0%Unchanged
Inceptionr LLC10,789$620.9K0.20%+10,789New
BancorpSouth Bank10,769$619.8K0.06%−157−1.4%Reduced
FDx Advisors, Inc.10,614$619.0K0.03%00.0%Unchanged
Cerity Partners LLC10,682$614.7K0.00%+95+0.9%Added
Prudential Financial Inc10,350$595.6K0.00%+1,528+17.3%Added
British Columbia Investment Management Corp10,270$591.0K0.01%−28−0.3%Reduced
Public Employees Retirement Association of Colorado10,192$587.0K0.00%−731−6.7%Reduced
RBF Capital, LLC10,000$575.5K0.04%00.0%Unchanged
Logan Capital Management Inc9,700$558.2K0.03%00.0%Unchanged
Janney Montgomery Scott LLC9,321$536.0K0.00%−462−4.7%Reduced
Securian Asset Management, Inc9,286$534.4K0.01%−116−1.2%Reduced
Nordea Investment Management AB9,384$532.6K0.00%−1,235−11.6%Reduced
Parallel Advisors, LLC9,033$519.8K0.02%+405+4.7%Added
Westpac Banking Corp9,015$518.8K0.01%00.0%Unchanged
Wellington Shields & Co., LLC9,000$518.0K0.12%−1,000−10.0%Reduced
ISAM Funds (UK) Ltd8,909$512.7K0.65%+8,909New
Algert Global LLC8,840$508.7K0.02%+8,840New
Raymond James Trust N.A.8,683$500.0K0.02%+308+3.7%Added
Hennion & Walsh Asset Management, Inc.8,625$496.0K0.03%−753−8.0%Reduced
XTX Topco Ltd8,295$477.4K0.10%+8,295New
Fisher Asset Management, LLC8,148$468.9K0.00%−1,214−13.0%Reduced
Guggenheim Capital LLC8,147$468.9K0.00%+1,342+19.7%Added
Maryland State Retirement & Pension System8,132$468.0K0.01%+644+8.6%Added
Ghe, LLC8,039$462.6K0.36%+329+4.3%Added
HighTower Advisors, LLC8,007$462.0K0.00%−202−2.5%Reduced
Sumitomo Mitsui DS Asset Management Company, Ltd7,931$456.4K0.01%00.0%Unchanged
Diversified Trust Co7,894$454.3K0.02%+7,894New
Daiwa Securities Group Inc.7,764$447.0K0.00%+1,753+29.2%Added
Nelson, Van Denburg & Campbell Wealth Management Group, LLC7,694$442.8K0.03%+69+0.9%Added
Banque Cantonale Vaudoise7,416$427.0K0.02%+6,000+423.7%Added
Fayez Sarofim & Co7,300$420.1K0.00%00.0%Unchanged
Front Street Capital Management, Inc.7,105$409.0K0.09%00.0%Unchanged
Forsta Ap-Fonden7,000$402.9K0.00%00.0%Unchanged
Mariner, LLC6,960$401.0K0.00%+250+3.7%Added
Ethic Inc.6,836$393.4K0.02%−211−3.0%Reduced
Segall Bryant & Hamill, LLC6,732$387.0K0.00%00.0%Unchanged
Haverford Trust Co6,693$385.2K0.00%+23+0.3%Added
Beaumont Financial Advisors, LLC6,643$382.3K0.04%00.0%Unchanged
Procyon Private Wealth Partners, LLC6,639$382.1K0.06%−11−0.2%Reduced
Susquehanna International Group, LLP6,474$372.6K0.00%−3,526−35.3%Reduced
O'Shaughnessy Asset Management, LLC6,390$367.7K0.01%+1,204+23.2%Added
Snowden Capital Advisors LLC6,288$361.9K0.01%−103−1.6%Reduced
Wilbanks Smith & Thomas Asset Management LLC6,091$350.5K0.01%00.0%Unchanged
Candriam Luxembourg S.C.A.6,495$344.1K0.00%+6,495New
CIBC Asset Management Inc5,926$341.0K0.00%−672−10.2%Reduced
Mercer Global Advisors Inc5,855$337.0K0.00%−193−3.2%Reduced
Creative Planning5,764$331.7K0.00%+154+2.7%Added