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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 2022

Institutional positions in SEI Investments Co as of Mar 31, 2022. 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
465
−3 vs. Q4 2021
Shares held
96.4M
−910.9K (−0.9%) vs. Q4 2021
Total value
$5.81B
−$126.9M (−2.1%) vs. Q4 2021
New holders
42
164 more added
Sold out
45
159 more reduced

4 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2021: 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 2022: 465 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 2022: $5.81B
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 2022

Shares, value and share of portfolio for each institution holding SEI Investments Co; share changes are against Q4 2021.

Institutions holding SEIC in Q1 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Moors & Cabot, Inc.19,546$1.18M0.07%00.0%Unchanged
Elo Mutual Pension Insurance Co19,551$1.18M0.03%+19,551New
FDx Advisors, Inc.19,392$1.17M0.04%+2,117+12.3%Added
Gulf International Bank (UK) Ltd19,343$1.16M0.02%00.0%Unchanged
Panagora Asset Management Inc19,113$1.15M0.01%+1,943+11.3%Added
Utah Retirement Systems19,074$1.15M0.02%−500−2.6%Reduced
Valley National Advisers Inc18,818$1.13M0.22%+15,459+460.2%Added
Winton Group Ltd18,778$1.13M0.06%+261+1.4%Added
Engineers Gate Manager LP18,689$1.13M0.04%+6,055+47.9%Added
British Columbia Investment Management Corp18,302$1.10M0.01%−2,847−13.5%Reduced
APG Asset Management N.V.20,316$1.10M0.00%−37,937−65.1%Reduced
Gould Capital, LLC18,128$1.09M0.78%+976+5.7%Added
Achmea Investment Management B.V.18,098$1.09M0.03%+18,098New
Cypress Capital, LLC17,964$1.08M0.13%00.0%Unchanged
Federated Hermes, Inc.17,808$1.07M0.00%−391−2.1%Reduced
Northwestern Mutual Investment Management Company, LLC17,476$1.05M0.02%−93−0.5%Reduced
TrimTabs Asset Management, LLC17,400$1.05M0.35%+453+2.7%Added
Zeke Capital Advisors, LLC17,390$1.05M0.05%+1,682+10.7%Added
Ashton Thomas Private Wealth, LLC17,334$1.04M0.09%+17,334New
Baker Tilly Wealth Management, LLC17,315$1.04M0.12%+3,139+22.1%Added
Ontario Teachers Pension Plan Board17,262$1.04M0.01%−5,492−24.1%Reduced
Donald L. Hagan, LLC16,891$1.02M0.57%+16,891New
Meristem Family Wealth, LLC16,877$1.02M0.11%−60.0%Reduced
Unigestion Holding SA16,518$995.0K0.04%00.0%Unchanged
First Republic Investment Management, Inc.16,322$983.0K0.00%+36+0.2%Added
SG Americas Securities, LLC16,182$974.0K0.01%−24,703−60.4%Reduced
DnB Asset Management AS15,909$957.9K0.01%+370+2.4%Added
Boston Financial Mangement LLC15,900$957.0K0.04%00.0%Unchanged
Franklin Resources Inc15,771$949.0K0.00%−59,665−79.1%Reduced
M&T Bank Corp15,470$932.0K0.00%+4,128+36.4%Added
Baird Financial Group, Inc.15,410$928.0K0.00%+280+1.9%Added
Van Eck Associates Corp15,420$928.0K0.00%+1,514+10.9%Added
Illinois Municipal Retirement Fund15,233$917.0K0.03%00.0%Unchanged
Marshall Financial Group LLC14,883$896.0K0.37%+66+0.4%Added
Allspring Global Investments Holdings, LLC14,703$885.0K0.00%−90,611−86.0%Reduced
Teachers Retirement System of the State of Kentucky14,705$885.0K0.01%−1,000−6.4%Reduced
Gotham Asset Management, LLC14,555$876.0K0.03%+5,382+58.7%Added
Nissay Asset Management Corp14,403$867.0K0.01%+95+0.7%Added
Jane Street Group, LLC14,041$845.0K0.00%+6,028+75.2%Added
Advisor Group Holdings, Inc.15,315$824.0K0.00%+631+4.3%Added
Mackenzie Financial Corp13,337$803.0K0.00%−682−4.9%Reduced
Tudor Investment Corp Et Al13,072$787.0K0.02%−24,762−65.4%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)12,540$755.0K0.00%−1,598−11.3%Reduced
Susquehanna International Group, LLP12,473$751.0K0.00%−5,168−29.3%Reduced
Patton Albertson Miller Group, LLC11,800$710.0K0.12%00.0%Unchanged
Xponance, Inc.11,672$703.0K0.01%−253−2.1%Reduced
Ossiam11,563$696.0K0.02%+579+5.3%Added
Mirabella Financial Services LLP11,465$690.0K0.08%+11,465New
BancorpSouth Bank11,339$683.0K0.09%−461−3.9%Reduced
Crossmark Global Holdings, Inc.11,230$676.0K0.02%+110+1.0%Added
TD Waterhouse Canada Inc.10,570$672.3K0.01%+441+4.4%Added
Crawford Investment Counsel Inc11,005$663.0K0.01%+525+5.0%Added
Public Employees Retirement Association of Colorado10,923$658.0K0.00%00.0%Unchanged
DekaBank Deutsche Girozentrale10,515$655.0K0.00%+1,828+21.0%Added
Commerce Bank10,664$642.0K0.00%−722−6.3%Reduced
Northwest Investment Counselors, LLC10,489$632.0K0.17%−300−2.8%Reduced
EagleClaw Capital Managment, LLC10,477$631.0K0.14%−240−2.2%Reduced
Citadel Advisors LLC10,407$627.0K0.00%−49,632−82.7%Reduced
RBF Capital, LLC10,000$613.0K0.04%00.0%Unchanged
Snowden Capital Advisors LLC10,139$610.0K0.02%+5,175+104.3%Added
Interval Partners, LP10,058$606.0K0.05%−21,591−68.2%Reduced
Wellington Shields & Co., LLC10,000$602.0K0.20%−2,000−16.7%Reduced
Prudential Financial Inc9,984$601.0K0.00%−116,729−92.1%Reduced
Ashfield Capital Partners, LLC9,964$600.0K0.04%00.0%Unchanged
Parallel Advisors, LLC9,597$588.0K0.02%+7,697+405.1%Added
Logan Capital Management Inc9,700$584.0K0.03%00.0%Unchanged
Fisher Asset Management, LLC9,633$580.0K0.00%+241+2.6%Added
Telos Capital Management, Inc.9,600$578.0K0.08%00.0%Unchanged
Westpac Banking Corp9,467$570.0K0.01%00.0%Unchanged
Standard Life Aberdeen plc9,249$566.0K0.00%−459−4.7%Reduced
Securian Asset Management, Inc9,392$565.0K0.01%−100−1.1%Reduced
Nordea Investment Management AB9,138$562.0K0.00%00.0%Unchanged
Natixis9,197$554.0K0.00%−23,985−72.3%Reduced
HighTower Advisors, LLC9,154$551.0K0.00%−22,914−71.5%Reduced
King Luther Capital Management Corp9,140$550.0K0.00%−3,378−27.0%Reduced
Hillsdale Investment Management Inc.9,150$550.0K0.04%00.0%Unchanged
Raymond James Trust N.A.9,048$544.0K0.02%+1,536+20.4%Added
Abbot Financial Management, Inc.8,900$536.0K0.26%00.0%Unchanged
Baldwin Investment Management, LLC8,530$514.0K0.14%−1,816−17.6%Reduced
D. E. Shaw & Co., Inc.8,505$512.0K0.00%−70,634−89.3%Reduced
Ergoteles LLC8,088$487.0K0.02%+8,088New
Qube Research & Technologies Ltd8,057$485.0K0.00%−178,544−95.7%Reduced
Glenmede Trust Co NA8,017$482.0K0.00%−31,012−79.5%Reduced
Ghe, LLC7,771$468.0K0.39%+411+5.6%Added
Nelson, Van Denburg & Campbell Wealth Management Group, LLC7,625$458.0K0.04%−1,799−19.1%Reduced
Susquehanna Fundamental Investments, LLC7,570$456.0K0.01%+1,370+22.1%Added
Grantham, Mayo, Van Otterloo & Co. LLC7,513$452.0K0.00%−23,379−75.7%Reduced
Maryland State Retirement & Pension System7,488$451.0K0.01%00.0%Unchanged
StoneX Group Inc.7,326$441.1K0.04%+7,326New
Fayez Sarofim & Co7,300$440.0K0.00%00.0%Unchanged
PEAK6 Investments LLC7,246$436.0K0.01%+3,316+84.4%Added
Legacy Wealth Asset Management, LLC7,226$435.0K0.15%+19+0.3%Added
Vestmark Advisory Solutions, Inc.7,136$430.0K0.02%+127+1.8%Added
Front Street Capital Management, Inc.7,105$428.0K0.08%00.0%Unchanged
TownSquare Capital, LLC7,066$425.0K0.01%+1,271+21.9%Added
Bailey Value Limited Partnership7,000$421.0K0.54%00.0%Unchanged
Seven Eight Capital, LP6,958$419.0K0.06%+6,958New
Beaumont Financial Partners, LLC6,815$410.0K0.03%−775−10.2%Reduced
Segall Bryant & Hamill, LLC6,732$405.0K0.00%00.0%Unchanged
Haverford Trust Co6,670$402.0K0.00%−1,200−15.2%Reduced