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SEI in the 13F filings

Solaris Oilfield Infrastructure Inc CL A · CUSIP 83418M103

Sector · EnergyTheme · Industrials and automation· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2023Q4 2022Q3 2022Q2 2022Q1 2022Q3 2020
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
29
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 6 listed it in both
Shares listed
12,602,436
combined, among listed positions
Reported value
$712m
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: 16 buyers (opened or added shares) and 16 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +44,916.

Managers listing SEI 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.

29 of 29 holders

ActionFiling
Millennium Management LLC2,285,544$129m0.05%Added+440,49415 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,941,546$110m0.09%Added+861,61515 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,862,561$105munder 0.1%Trimmed-427,00315 May 2026 (the filing on sec.gov)
Jane Street Group LLC1,568,463$89munder 0.1%Trimmed-72,55312 May 2026 (the filing on sec.gov)
Marshall Wace LLP1,470,242$83m0.08%Added+632,13215 May 2026 (the filing on sec.gov)
Wellington Management Group LLP929,162$53munder 0.1%Trimmed-318,50115 May 2026 (the filing on sec.gov)
Citadel Advisors LLC493,484$28munder 0.1%Trimmed-671,01615 May 2026 (the filing on sec.gov)
Point72 Asset Management LP328,460$19munder 0.1%Added+284,16015 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC325,806$18munder 0.1%Added+222,19515 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC287,171$16munder 0.1%Trimmed-23,81715 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC257,680$15munder 0.1%Added+88,43027 Oct 2026 (the filing on sec.gov)
Freestone Grove Partners LP133,480$7.5m0.05%Trimmed-79,66015 May 2026 (the filing on sec.gov)
Invesco Ltd106,181$6.0munder 0.1%Added+53,17212 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP103,701$5.9munder 0.1%Trimmed-145,45614 May 2026 (the filing on sec.gov)
AQR Capital Management LLC97,466$5.5munder 0.1%Trimmed-3,91515 May 2026 (the filing on sec.gov)
Polen Capital Management LLC83,675$4.7munder 0.1%Added+55,07814 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC62,623$3.5munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc51,361$2.9munder 0.1%Trimmed-270,08715 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP44,132$2.5munder 0.1%Trimmed-89,67815 May 2026 (the filing on sec.gov)
AllianceBernstein LP45,362$2.1munder 0.1%Trimmed-120,23515 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP33,613$1.9munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Holocene Advisors LP26,263$1.5munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd20,600$1.2munder 0.1%Held018 May 2026 (the filing on sec.gov)
Winton Group Ltd17,896$1.0munder 0.1%Added+13,39612 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC13,970$789kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
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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 (6)

Exited (4)

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.
1 in Q4 2022 to 10 in Q2 2026

Tracked managers listing it, at least.

035810201820192020202220252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SEI by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20171$3.9mn.a.n.a.
Q4 20171$2.4mn.a.n.a.
Q1 20182$7.9mn.a.n.a.
Q2 20181$6.4mn.a.n.a.
Q3 20181$8.4mn.a.n.a.
Q4 20182$12mn.a.n.a.
Q1 20192$20mn.a.n.a.
Q2 20191$18mn.a.n.a.
Q3 20191$16mn.a.n.a.
Q4 20191$16mn.a.n.a.
Q1 20203$8.7mn.a.n.a.
Q2 20203$7.4mn.a.n.a.
Q3 20202$572kn.a.n.a.
Q1 20221$255kn.a.n.a.
Q2 20221$231kn.a.n.a.
Q3 20221$161kn.a.n.a.
Q4 20221$171kn.a.n.a.
Q4 20231$3.9m10
Q1 20252$5.0m20
Q2 20251$3.4m01
Q3 20259$148m80
Q4 20257$221m1914
Q1 20267$342m1616
Q2 202610$328m1817

Compare with…

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

SEI and GE →SEI and LRCX →SEI and GEV →Choose a stock to compare with SEI →

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 SEI, latest filings →Back to the 13F Explorer →