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SEIC in the 13F filings

Sei Invts Co · CUSIP 784117103

Sector · Other financial servicesTheme · Financial services· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 1 May 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 8 listed it in both
Shares listed
6,706,505
combined, among listed positions
Reported value
$527m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 12 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -448,610.

Managers listing SEIC in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Fidelity (FMR LLC)2,092,499$164munder 0.1%Added+749,32515 May 2026 (the filing on sec.gov)
Invesco Ltd1,145,404$90munder 0.1%Trimmed-586,98012 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP567,967$45munder 0.1%Added+104,32114 May 2026 (the filing on sec.gov)
AQR Capital Management LLC420,042$33munder 0.1%Trimmed-31,83115 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC411,851$32m0.13%Added+33,63715 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC399,826$31munder 0.1%Added+2,60014 May 2026 (the filing on sec.gov)
Man Group PLC360,910$28m0.05%Added+27,34215 May 2026 (the filing on sec.gov)
Bridgewater Associates LP232,675$18m0.08%Trimmed-113,20215 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC225,674$18munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Markel Group Inc173,200$14m0.11%Held01 May 2026 (the filing on sec.gov)
AllianceBernstein LP126,476$10munder 0.1%Added+1,49015 May 2026 (the filing on sec.gov)
Millennium Management LLC118,765$9.3munder 0.1%Trimmed-252,87015 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc91,883$7.2munder 0.1%Added+10,91515 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC57,890$4.5munder 0.1%Trimmed-89,41015 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP50,212$3.9munder 0.1%Trimmed-15,18314 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd45,122$3.5munder 0.1%Held018 May 2026 (the filing on sec.gov)
Holocene Advisors LP42,056$3.3munder 0.1%Trimmed-47715 May 2026 (the filing on sec.gov)
Citadel Advisors LLC41,969$3.3munder 0.1%Trimmed-110,30715 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC21,151$1.7munder 0.1%Added+2,13127 Oct 2026 (the filing on sec.gov)
Two Sigma Investments LP19,200$1.5munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP16,764$1.3m0.05%Added+1,13413 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP16,344$1.3munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Verition Fund Management LLC10,272$806kunder 0.1%Trimmed-67,29915 May 2026 (the filing on sec.gov)
Point72 Asset Management LP8,605$675kunder 0.1%Trimmed-110,10715 May 2026 (the filing on sec.gov)
Jane Street Group LLC6,300$494kunder 0.1%Trimmed-130,93712 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (5)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 6 in Q2 2026

Tracked managers listing it, at least.

0510152014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SEIC by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201310$292mn.a.n.a.
Q3 201310$288mn.a.n.a.
Q4 20139$338mn.a.n.a.
Q1 201412$361mn.a.n.a.
Q2 201411$339mn.a.n.a.
Q3 20149$286mn.a.n.a.
Q4 20148$339mn.a.n.a.
Q1 20156$345mn.a.n.a.
Q2 20155$379mn.a.n.a.
Q3 20158$343mn.a.n.a.
Q4 20154$331mn.a.n.a.
Q1 20164$154mn.a.n.a.
Q2 20167$193mn.a.n.a.
Q3 20164$128mn.a.n.a.
Q4 20163$132mn.a.n.a.
Q1 20173$81mn.a.n.a.
Q2 20177$174mn.a.n.a.
Q3 20175$164mn.a.n.a.
Q4 20175$193mn.a.n.a.
Q1 20188$310mn.a.n.a.
Q2 201813$315mn.a.n.a.
Q3 201810$207mn.a.n.a.
Q4 201813$196mn.a.n.a.
Q1 201911$264mn.a.n.a.
Q2 201911$320mn.a.n.a.
Q3 20198$288mn.a.n.a.
Q4 20198$208mn.a.n.a.
Q1 20209$135mn.a.n.a.
Q2 20205$66mn.a.n.a.
Q3 20206$50mn.a.n.a.
Q4 20205$46mn.a.n.a.
Q1 20217$68mn.a.n.a.
Q2 20216$67mn.a.n.a.
Q3 202110$125mn.a.n.a.
Q4 20219$128mn.a.n.a.
Q1 20227$100mn.a.n.a.
Q2 20229$90mn.a.n.a.
Q3 20229$87mn.a.n.a.
Q4 20228$103mn.a.n.a.
Q1 20237$88mn.a.n.a.
Q2 20235$43mn.a.n.a.
Q3 20234$52mn.a.n.a.
Q4 202311$107m73
Q1 202411$137m46
Q2 20244$64m13
Q3 20246$73m41
Q4 20249$148m53
Q1 202510$148m81
Q2 20258$124m35
Q3 20258$129m71
Q4 202510$162m1714
Q1 20267$128m1217
Q2 20266$92m1611

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

SEIC and V →SEIC and AXP →SEIC and BAC →Choose a stock to compare with SEIC →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own SEIC, latest filings →Back to the 13F Explorer →