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IWB in the 13F filings

iShares Russell 1000 ETF · CUSIP 464287622

Sector · Funds and ETFs
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
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
14
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed
11,071,618
combined, among listed positions
Reported value
$3.9bn
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: 9 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +258,316.

Managers listing IWB 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.

14 of 14 holders

ActionFiling
Fidelity (FMR LLC)10,059,810$3.6bn0.19%Added+215,61815 May 2026 (the filing on sec.gov)
Millennium Management LLC521,919$186m0.08%Added+66,79015 May 2026 (the filing on sec.gov)
AQR Capital Management LLC168,327$60munder 0.1%Added+17,49315 May 2026 (the filing on sec.gov)
Two Sigma Investments LP122,120$44munder 0.1%Added+50,76015 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC73,877$26munder 0.1%Trimmed-8,09127 Oct 2026 (the filing on sec.gov)
Jane Street Group LLC47,642$17munder 0.1%Added+34,94212 May 2026 (the filing on sec.gov)
AllianceBernstein LP43,891$16munder 0.1%Added+16,77315 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc14,251$5.1munder 0.1%Added+11515 May 2026 (the filing on sec.gov)
Tudor Investment Corp7,744$2.8munder 0.1%Trimmed-24,04415 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP6,031$2.1munder 0.1%Trimmed-26,20615 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC2,644$942kunder 0.1%Trimmed-1,84313 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.2,029$723kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Capital Research Global Investors1,333$462kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
ARK Investment Management LLC0$00.00%Trimmed-3812 May 2026 (the filing on sec.gov)

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 (2)

Exited (2)

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.
4 in Q3 2024 to 2 in Q2 2026

Tracked managers listing it, at least.

0246201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
IWB by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20131$332kn.a.n.a.
Q3 20141$286mn.a.n.a.
Q4 20141$349mn.a.n.a.
Q1 20153$544mn.a.n.a.
Q2 20151$581mn.a.n.a.
Q3 20152$663mn.a.n.a.
Q4 20151$789mn.a.n.a.
Q1 20162$637mn.a.n.a.
Q2 20161$664mn.a.n.a.
Q3 20161$702mn.a.n.a.
Q4 20161$710mn.a.n.a.
Q1 20172$741mn.a.n.a.
Q2 20172$756mn.a.n.a.
Q3 20171$768mn.a.n.a.
Q4 20174$892mn.a.n.a.
Q1 20181$798mn.a.n.a.
Q2 20182$835mn.a.n.a.
Q3 20181$838mn.a.n.a.
Q4 20183$910mn.a.n.a.
Q1 20192$1.0bnn.a.n.a.
Q2 20192$1.0bnn.a.n.a.
Q3 20192$1.0bnn.a.n.a.
Q4 20192$1.1bnn.a.n.a.
Q1 20201$1.1bnn.a.n.a.
Q2 20201$1.6bnn.a.n.a.
Q3 20202$1.9bnn.a.n.a.
Q4 20201$2.1bnn.a.n.a.
Q1 20211$2.2bnn.a.n.a.
Q2 20211$2.3bnn.a.n.a.
Q3 20211$2.3bnn.a.n.a.
Q4 20212$2.5bnn.a.n.a.
Q1 20222$2.5bnn.a.n.a.
Q2 20222$2.5bnn.a.n.a.
Q3 20221$2.4bnn.a.n.a.
Q4 20221$2.6bnn.a.n.a.
Q1 20231$2.7bnn.a.n.a.
Q2 20232$3.0bnn.a.n.a.
Q3 20231$2.4bnn.a.n.a.
Q4 20233$2.8bn30
Q1 20244$3.0bn22
Q2 20245$3.3bn41
Q3 20244$3.2bn14
Q4 20244$4.1bn31
Q1 20253$3.1bn12
Q2 20253$3.5bn12
Q3 20252$3.7bn12
Q4 20253$3.8bn78
Q1 20264$3.8bn97
Q2 20262$4.1bn811

Compare with…

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

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