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Which funds own IWF

iShares RUS 1000 GRW ETF in the Q2 2026 filings. At least 4 of the 91 current managers on file reported a position, worth $4.4bn between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went one way: 4 managers opened or added against 0 cutting.

Managers holding: 4; at least, of 91 current
Combined value: $4.4bn; as reported
Opened: 0; new this quarter
Added to: 4; already held
Trimmed or sold out: 0; 0 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

Manager	Value	Weight	Shares	Change on the quarter	Action
Fidelity (FMR LLC) Long-only · $2304bn book	$4.1bn	0.2%	33,169,533	+$573m+24,853,456	Added
AllianceBernstein LP Long-only · $302bn book	$224m	0.1%	524,413	+$160m+390,307	Added
Polen Capital Management LLC Long-only · $11.6bn book	$76m	0.7%	613,639	-$97m+206,776	Added
ARK Investment Management LLC Long-only · $15.4bn book	$100k	0.0%	570	unchanged+354	Added

Ownership through time

At least 5 of the 95 managers whose filings are on file listed IWF in Q2 2026, against 3 in Q2 2013. The same number as in Q1 2026: 1 listed it again; 1 no longer listed it among the positions read, which can mean a holding below the listed range or a filing not yet made.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it

Their combined reported value

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Started in Q2 2026

No manager on file started a position.

Largest increases, by shares

Fidelity (FMR LLC)8,316,077 to 33,169,533 shares+$3.1bn
Polen Capital Management LLC406,863 to 613,639 shares+$26m
Capital Research Global Investors1,236 to 3,787 shares+$311k
ARK Investment Management LLC216 to 570 shares+$44k

Largest decreases, by shares

No manager on file sold part of it.

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Fidelity (FMR LLC)	Q2 2013	$4.1bn	$4.1bn
AllianceBernstein LP	Q3 2022	$609m	$224m
Polen Capital Management LLC	Q2 2013	$544m	$76m
Capital Research Global Investors	Q3 2020	$1.3m	$462k
ARK Investment Management LLC	Q1 2021	$1.1m	$71k
Two Sigma Investments LP	Q3 2013	$473m	last listed Q1 2026
Wellington Management Group LLP	Q1 2020	$464m	last listed Q1 2025
T. Rowe Price Associates Inc	Q3 2024	$374m	last listed Q3 2025
Jane Street Group LLC	Q3 2014	$183m	last listed Q4 2019
Two Sigma Advisers LP	Q3 2014	$142m	last listed Q3 2024
Invesco Ltd	Q3 2013	$114m	last listed Q4 2013
Susquehanna International Group LLP	Q2 2019	$84m	last listed Q2 2019
Squarepoint Ops LLC	Q1 2016	$39m	last listed Q1 2022
Marshall Wace LLP	Q1 2024	$28m	last listed Q1 2024
Baillie Gifford & Co	Q1 2016	$15m	last listed Q1 2016

What is inside it

Knowing who bought a fund is half the question. The other half is what the fund holds, which is the manager’s actual exposure rather than the wrapper they reached for.

What IWF holds

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

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The holdings, every quarter, and the week between

One email a week on what moved in the market and what it means for the people interviewing into it, with the 13F changes the quarter they are filed.

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