Vault-13

SEI INVTS CO SEIC

COM · Common Stock · CUSIP 784117103 · ISIN US7841171033

Financial services company

435 institutional holders
93,877,53193.9m shares reported held*
69.6% of all shares outstanding*
$4.6bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($24.7m this quarter). Holder counts are more reliable. Shares outstanding: 134.8m as of 2022-10-20, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $49.06. Options: 4 managers hold calls ($1.4m notional), 3 hold puts ($970.0k).

Biggest calls

SIMPLEX TRADING, LLC — $676.0k13.8k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $471.0k9.6k shares
CITADEL ADVISORS LLC — $294.0k6.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP — $804.0k16.4k shares
SIMPLEX TRADING, LLC — $166.0k3.4k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution +1.1 pts · filed 2026-10-27 7.9% +1.1 pts 9.4m≈ $828.5m 2026-10-27
LOOMIS SAYLES & CO L P 13G · exempt (held before listing) -0.1 pts · filed 2026-08-14 7.0% -0.1 pts 8.5m≈ $742.2m 2026-08-14
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 5.0% new 6.1m≈ $538.4m 2026-04-29

Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 3 sellingQ1 22: 0 buyingQ1 22: 1 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 2 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—3$4.5m—
Q1 20220—1$11.2m—
Q2 20220—0——
Q3 20220—2$2.8m—
DateInsiderTradeSharesPrice ValueTheir holding
2022-09-16 WEST ALFRED P JR 10% owner Sold 75,000 $53.68 $4.0m75.0k shares -1%
2022-09-15 WEST ALFRED P JR 10% owner Sold 83,386 $55.07 $4.6m83.4k shares -1%
2022-08-09 WITHROW WAYNE EXECUTIVE VICE PRESIDENT Sold 15,000 $55.78 $836.7k15.0k shares -28%
2022-07-29 MCGONIGLE DENNIS EXECUTIVE PRESIDENT Sold 35,000 $55.15 $1.9m35.0k shares -6%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VANGUARD GROUP INC 0.02% of their portfolio Valley Forge, PA 12,082,25312.1m $592.6m $592.6m 0.02% —
2 BlackRock Inc. 0.02% of their portfolio New York, NY 11,484,84611.5m $563.3m $563.3m 0.02% —
3 LOOMIS SAYLES & CO L P 1.11% of their portfolio BOSTON, MA 11,141,09611.1m $546.5m $546.5m 1.11% —
4 STATE STREET CORP 0.02% of their portfolio BOSTON, MA 6,293,6236.3m $308.7m $308.7m 0.02% —
5 ATLANTA CAPITAL MANAGEMENT CO L L C 1.30% of their portfolio ATLANTA, GA 5,947,5335.9m $291.7m $291.7m 1.30% —
6 Beutel, Goodman & Co Ltd. 1.28% of their portfolio TORONTO, A6 3,865,5313.9m $189.6m $189.6m 1.28% —
7 BANK OF AMERICA CORP /DE/ 0.02% of their portfolio CHARLOTTE, NC 3,479,9953.5m $170.7m $170.7m 0.02% —
8 CANADA LIFE ASSURANCE Co 0.28% of their portfolio WINNIPEG, A2 2,033,8472.0m $99.5m $99.5m 0.28% —
9 GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio BOSTON, MA 1,986,0132.0m $97.3m $97.3m 0.01% —
10 ROYCE & ASSOCIATES LP 0.81% of their portfolio New York, NY 1,454,0701.5m $71.3m $71.3m 0.81% —
11 Bank of New York Mellon Corp 0.02% of their portfolio NEW YORK, NY 1,348,4431.3m $66.1m $66.1m 0.02% —
12 Boston Trust Walden Corp 0.58% of their portfolio BOSTON, MA 1,185,0961.2m $58.1m $58.1m 0.58% —
13 DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio AUSTIN, TX 1,156,2561.2m $56.7m $56.7m 0.02% —
14 NORTHERN TRUST CORP 0.01% of their portfolio CHICAGO, IL 1,095,9211.1m $53.8m $53.8m 0.01% —
15 Tandem Investment Advisors, Inc. 2.59% of their portfolio CHARLESTON, SC 926,515926.5k $45.4m $45.4m 2.59% —
16 Legal & General Group Plc 0.02% of their portfolio London, X0 865,784865.8k $42.5m $42.5m 0.02% —
17 ROYAL BANK OF CANADA 0.01% of their portfolio TORONTO, A6 851,389851.4k $41.8m $41.8m 0.01% —
18 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 846,208846.2k $41.5m $41.5m 0.01% —
19 AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio KANSAS CITY, MO 832,152832.2k $40.8m $40.8m 0.04% —
20 NATIXIS ADVISORS, LLC 0.16% of their portfolio Boston, MA 787,875787.9k $38.6m $38.6m 0.16% —
21 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio SAN FRANCISCO, CA 626,528626.5k $30.7m $30.7m 0.01% —
22 AMERIPRISE FINANCIAL INC 0.01% of their portfolio MINNEAPOLIS, MN 606,982607.0k $30.0m $30.0m 0.01% —
23 AQR CAPITAL MANAGEMENT LLC 0.07% of their portfolio Greenwich, CT 600,498600.5k $29.5m $29.5m 0.07% —
24 NORGES BANK 0.01% of their portfolio OSLO, Q8 575,922575.9k $28.2m $28.2m 0.01% —
25 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.02% of their portfolio NEW YORK, NY 567,061567.1k $27.8m $27.8m 0.02% —
26 AMERICAN CAPITAL MANAGEMENT INC 1.09% of their portfolio NEW YORK, NY 563,509563.5k $27.6m $27.6m 1.09% —
27 Markel Group Inc. 0.41% of their portfolio Glen Allen, VA 559,200559.2k $27.4m $27.4m 0.41% —
28 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 550,106550.1k $27.0m $27.0m 0.01% —
29 GOLDMAN SACHS GROUP INC 0.01% of their portfolio NEW YORK, NY 502,744502.7k $24.7m $24.7m 0.01% —
30 BROWN ADVISORY INC 0.05% of their portfolio BALTIMORE, MD 502,405502.4k $24.6m $24.6m 0.05% —
31 ProShare Advisors LLC 0.09% of their portfolio BETHESDA, MD 490,349490.3k $24.1m $24.1m 0.09% —
32 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 449,464449.5k $22.0m $22.0m 0.00% —
33 Ceredex Value Advisors LLC 0.35% of their portfolio WINTER PARK, FL 432,555432.6k $21.2m $21.2m 0.35% —
34 PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio DES MOINES, IA 411,388411.4k $20.2m $20.2m 0.02% —
35 Amundi 0.01% of their portfolio Paris, I0 410,426410.4k $20.9m $20.9m 0.01% —
36 FIRST TRUST ADVISORS LP 0.03% of their portfolio Wheaton, IL 406,791406.8k $20.0m $20.0m 0.03% —
37 RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio NEW YORK, NY 403,126403.1k $19.8m $19.8m 0.03% —
38 RAYMOND JAMES & ASSOCIATES 0.02% of their portfolio ST PETERSBURG, FL 346,323346.3k $17.0m $17.0m 0.02% —
39 Sumitomo Mitsui Trust Group, Inc. 0.01% of their portfolio CHIYODA-KU, TOKYO, M0 340,345340.3k $16.7m $16.7m 0.01% —
40 RHUMBLINE ADVISERS 0.02% of their portfolio BOSTON, MA 328,459328.5k $16.1m $16.1m 0.02% —
41 EATON VANCE MANAGEMENT 0.02% of their portfolio BOSTON, MA 311,445311.4k $15.3m $15.3m 0.02% —
42 VICTORY CAPITAL MANAGEMENT INC 0.02% of their portfolio San Antonio, TX 305,568305.6k $15.0m $15.0m 0.02% —
43 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 301,253301.3k $14.8m $14.8m 0.01% —
44 AustralianSuper Pty Ltd 0.11% of their portfolio MELBOURNE, C3 296,360296.4k $14.5m $14.5m 0.11% —
45 JLB & ASSOCIATES INC 2.56% of their portfolio PLYMOUTH, MI 293,786293.8k $14.4m $14.4m 2.56% —
46 CITIGROUP INC 0.02% of their portfolio NEW YORK, NY 291,467291.5k $14.3m $14.3m 0.02% —
47 Retirement Systems of Alabama 0.06% of their portfolio MONTGOMERY, AL 281,509281.5k $13.8m $13.8m 0.06% —
48 Hendershot Investments Inc. 2.37% of their portfolio CENTREVILLE, VA 256,502256.5k $12.6m $12.6m 2.37% —
49 NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio ALBANY, NY 256,494256.5k $12.6m $12.6m 0.02% —
50 UBS Group AG 0.01% of their portfolio ZURICH, V8 252,665252.7k $12.4m $12.4m 0.01% —
51 Man Group plc 0.06% of their portfolio LONDON, X0 250,824250.8k $12.3m $12.3m 0.06% —
52 California Public Employees Retirement System 0.01% of their portfolio Sacramento, CA 242,167242.2k $11.9m $11.9m 0.01% —
53 TD Asset Management Inc 0.01% of their portfolio Toronto, A6 221,842221.8k $11.2m $11.2m 0.01% —
54 ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio Berwyn, PA 218,192218.2k $10.7m $10.7m 0.01% —
55 PGGM Investments 0.19% of their portfolio ZEIST, P7 216,461216.5k $10.6m $10.6m 0.19% —
56 DEUTSCHE BANK AG\ 0.01% of their portfolio FRANKFURT AM MAIN, 2M 215,232215.2k $10.6m $10.6m 0.01% —
57 FMR LLC 0.00% of their portfolio BOSTON, MA 201,758201.8k $9.9m $9.9m 0.00% —
58 River Road Asset Management, LLC 0.15% of their portfolio LOUISVILLE, KY 200,699200.7k $9.8m $9.8m 0.15% —
59 TRUIST FINANCIAL CORP 0.02% of their portfolio CHARLOTTE, NC 195,743195.7k $9.6m $9.6m 0.02% —
60 Leith Wheeler Investment Counsel Ltd. 1.56% of their portfolio VANCOUVER, A1 189,315189.3k $9.3m $9.3m 1.56% —
61 CREDIT SUISSE AG/ 0.01% of their portfolio ZURICH, V8 188,955189.0k $9.3m $9.3m 0.01% —
62 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio JUPITER, FL 179,605179.6k $8.8m $8.8m 0.05% —
63 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio WEST SACRAMENTO, CA 178,975179.0k $8.8m $8.8m 0.01% —
64 AXA S.A. 0.02% of their portfolio PARIS, I0 170,822170.8k $8.4m $8.4m 0.02% —
65 KBC Group NV 0.04% of their portfolio Brussels, C9 169,211169.2k $8.3m $8.3m 0.04% —
66 AMERICAN INTERNATIONAL GROUP, INC. 0.06% of their portfolio New York, NY 162,494162.5k $8.0m $8.0m 0.06% —
67 HAHN CAPITAL MANAGEMENT LLC 2.23% of their portfolio WALNUT CREEK, CA 162,350162.3k $8.0m $8.0m 2.23% —
68 SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio London, X0 161,618161.6k $7.9m $7.9m 0.01% —
69 Skandinaviska Enskilda Banken AB (publ) 0.06% of their portfolio STOCKHOLM, V7 157,096157.1k $7.7m $7.7m 0.06% —
70 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 156,698156.7k $7.7m $7.7m 0.00% —
71 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.02% of their portfolio TALLAHASSEE, FL 150,322150.3k $7.4m $7.4m 0.02% —
72 NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio ALBANY, NY 146,022146.0k $7.2m $7.2m 0.02% —
73 TEACHER RETIREMENT SYSTEM OF TEXAS 0.05% of their portfolio AUSTIN, TX 145,016145.0k $7.1m $7.1m 0.05% —
74 Janney Montgomery Scott LLC 0.03% of their portfolio PHILADELPHIA, PA 142,376142.4k $7.0m $7.0m 0.03% —
75 State of Alaska, Department of Revenue 0.09% of their portfolio JUNEAU, AK 136,699136.7k $6.7m $6.7m 0.09% —
76 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 126,025126.0k $6.2m $6.2m 0.00% —
77 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 124,506124.5k $6.1m $6.1m 0.01% —
78 SOUTHERNSUN ASSET MANAGEMENT, LLC 0.73% of their portfolio Memphis, TN 120,085120.1k $5.9m $5.9m 0.73% —
79 Korea Investment CORP 0.02% of their portfolio SEOUL, M5 119,677119.7k $5.9m $5.9m 0.02% —
80 CHOREO, LLC 0.33% of their portfolio ROCKFORD, IL 115,800115.8k $5.7m $5.7m 0.33% —
81 Parsec Financial Management, Inc. 0.28% of their portfolio ASHEVILLE, NC 115,301115.3k $5.7m $5.7m 0.28% —
82 Ensign Peak Advisors, Inc 0.01% of their portfolio SALT LAKE CITY, UT 110,154110.2k $5.4m $5.4m 0.01% —
83 Thrivent Financial for Lutherans 0.01% of their portfolio Minneapolis, MN 109,149109.1k $5.4m $5.4m 0.01% —
84 DAVIS R M INC 0.15% of their portfolio PORTLAND, ME 106,499106.5k $5.2m $5.2m 0.15% —
85 Qube Research & Technologies Ltd 0.03% of their portfolio LONDON, X0 104,797104.8k $5.1m $5.1m 0.03% —
86 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 101,644101.6k $5.2m $5.2m 0.00% —
87 Banco Santander, S.A. 0.07% of their portfolio Madrid, U3 101,627101.6k $5.0m $5.0m 0.07% —
88 Brandywine Global Investment Management, LLC 0.05% of their portfolio PHILADELPHIA, PA 99,70399.7k $4.9m $4.9m 0.05% —
89 Thrive Wealth Management, LLC 1.64% of their portfolio AUDUBON, PA 95,72395.7k $4.7m $4.7m 1.64% —
90 Bridgewater Associates, LP 0.02% of their portfolio Westport, CT 91,23791.2k $4.5m $4.5m 0.02% —
91 Andra AP-fonden 0.14% of their portfolio GOTEBORG, V7 87,80087.8k $4.3m $4.3m 0.14% —
92 FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND 0.06% of their portfolio STOCKHOLM, V7 85,84785.8k $4.6m $4.6m 0.06% —
93 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 84,76184.8k $4.2m $4.2m 0.00% —
94 MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.05% of their portfolio New York, NY 82,73782.7k $4.1m $4.1m 0.05% —
95 Mitsubishi UFJ Trust & Banking Corp 0.01% of their portfolio TOKYO, M0 81,25381.3k $4.0m $4.0m 0.01% —
96 Court Place Advisors, LLC 1.55% of their portfolio ELLICOTT CITY, MD 78,63678.6k $3.9m $3.9m 1.55% —
97 CWM, LLC 0.03% of their portfolio OMAHA, NE 78,37378.4k $3.8m $3.8m 0.03% —
98 AMALGAMATED BANK 0.04% of their portfolio NEW YORK, NY 75,03875.0k $3.7m $3.7m 0.04% —
99 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.06% of their portfolio BALA CYNWYD, PA 74,45374.5k $3.7m $3.7m 0.06% —
100 TEXAS PERMANENT SCHOOL FUND CORP 0.06% of their portfolio AUSTIN, TX 74,05974.1k $3.6m $3.6m 0.06% —