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Which funds own ALGN

Align Technology in the Q2 2026 filings. At least 2 of the 91 current managers on file reported a position, worth $199m between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went the other way: 3 managers trimmed or sold out against 0 buying.

Managers holding: 2; at least, of 91 current
Combined value: $199m; as reported
Opened: 0; new this quarter
Added to: 0; already held
Trimmed or sold out: 3; 1 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
Ruane Cunniff & Goldfarb LP Activist · $6.4bn book	$198m	3.1%	1,171,455	-$9.3m-35,080	Trimmed
ARK Investment Management LLC Long-only · $15.4bn book	$900k	0.0%	5,264	-$200k-1,097	Trimmed

Sold out of this quarter

Valued at what the position was worth in the previous filing, because by this one it is gone.

Marshall Wace LLP · Quantitative$13m held before

Ownership through time

At least 10 of the 95 managers whose filings are on file listed ALGN in Q2 2026, against 2 in Q2 2013. The same number as in Q1 2026: 2 listed it again; 2 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

Woodline Partners LP81,688 to 225,971 shares+$24m
Arrowstreet Capital LP1,054,633 to 1,071,601 shares+$2.9m
AQR Capital Management LLC893,206 to 899,731 shares+$1.1m
Caxton Associates LLP5,271 to 9,148 shares+$654k

Largest decreases, by shares

Capital World Investors4,072,296 to 3,422,385 shares-$110m
Artisan Partners LP217,158 to 139,333 shares-$13m
Ruane Cunniff & Goldfarb LP1,206,535 to 1,171,455 shares-$5.9m
ARK Investment Management LLC6,361 to 5,264 shares-$185k

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Fidelity (FMR LLC)	Q3 2013	$709m	$685m
Capital World Investors	Q3 2019	$747m	$577m
Ruane Cunniff & Goldfarb LP	Q3 2015	$207m	$198m
Arrowstreet Capital LP	Q1 2017	$301m	$181m
AQR Capital Management LLC	Q1 2018	$237m	$151m
Woodline Partners LP	Q1 2021	$38m	$38m
Artisan Partners LP	Q1 2018	$129m	$24m
Bridgewater Associates LP	Q3 2015	$56m	$14m
Caxton Associates LLP	Q2 2017	$22m	$1.5m
ARK Investment Management LLC	Q4 2016	$7.2m	$888k
Janus Henderson Group Ltd	Q4 2014	$1.7bn	last listed Q2 2025
AllianceBernstein LP	Q2 2013	$1.6bn	last listed Q3 2024
Wellington Management Group LLP	Q2 2016	$1.4bn	last listed Q3 2025
Polen Capital Management LLC	Q1 2016	$1.4bn	last listed Q4 2024
T. Rowe Price Associates Inc	Q3 2014	$1.1bn	last listed Q1 2024
Renaissance Technologies LLC	Q4 2013	$1.1bn	last listed Q4 2022
Invesco Ltd	Q2 2017	$741m	last listed Q4 2023
Viking Global Investors LP	Q3 2017	$511m	last listed Q3 2021
Citadel Advisors LLC	Q3 2018	$451m	last listed Q2 2025
Lone Pine Capital LLC	Q3 2016	$284m	last listed Q1 2017

What ALGN is worth

Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.

Build the comp set around ALGN →

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.

Comps ExplorerValue it against the peers it trades beside Every managerRead any of these books in full Deal tapeWhat buyers paid for whole companies, not slices Hedge fund interviewsHow the room runs, and the stock pitch it wants

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The holdings, every quarter, and the week between

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