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Which funds own ALKS

Alkermes PLC in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $571m between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding: 3; at least, of 91 current
Combined value: $571m; as reported
Opened: 0; new this quarter
Added to: 2; already held
Trimmed or sold out: 4; 3 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
Renaissance Technologies LLC Quantitative · $72.6bn book	$339m	0.5%	6,460,928	+$121m+300,500	Added
Holocene Advisors LP Long/short equity · $44.4bn book	$189m	0.4%	3,601,472	+$107m+1,284,146	Added
Artisan Partners LP Long-only · $63.1bn book	$44m	0.1%	831,006	+$4.2m-280,735	Trimmed

Sold out of this quarter

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

Hudson Bay Capital Management LP · Multi-strategy$6.1m held before
Bridgewater Associates LP · Macro$3.0m held before
Farallon Capital Management LLC · Long/short equity$700k held before

Ownership through time

At least 9 of the 95 managers whose filings are on file listed ALKS in Q2 2026, against 9 in Q2 2013. 1 manager fewer than in Q1 2026: 3 listed it again; 1 sold out, by its own filing; 3 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

Holocene Advisors LP2,317,326 to 3,601,472 shares+$67m
Renaissance Technologies LLC6,160,428 to 6,460,928 shares+$16m
Woodline Partners LP558,567 to 560,282 shares+$90k

Largest decreases, by shares

Artisan Partners LP1,111,741 to 831,006 shares-$15m
Moore Capital Management LP158,499 to 76,540 shares-$4.3m
Marshall Wace LLP999,322 to 969,954 shares-$1.5m

Left it

Farallon Capital Management LLCwas $735k

Manager	First listed	Largest	Q2 2026
T. Rowe Price Associates Inc	Q2 2013	$1.3bn	$353m
Renaissance Technologies LLC	Q2 2013	$339m	$339m
Holocene Advisors LP	Q4 2017	$189m	$189m
Wellington Management Group LLP	Q2 2013	$1.6bn	$147m
Marshall Wace LLP	Q2 2013	$51m	$51m
Artisan Partners LP	Q3 2014	$257m	$44m
Woodline Partners LP	Q2 2020	$55m	$29m
Schonfeld Strategic Advisors LLC	Q2 2017	$10m	$10m
Moore Capital Management LP	Q2 2023	$5.6m	$4.0m
Fidelity (FMR LLC)	Q2 2013	$1.8bn	last listed Q1 2019
Invesco Ltd	Q1 2014	$761m	last listed Q1 2019
Citadel Advisors LLC	Q4 2015	$168m	last listed Q4 2022
Janus Henderson Group Ltd	Q2 2017	$153m	last listed Q1 2019
Millennium Management LLC	Q2 2013	$99m	last listed Q1 2023
Viking Global Investors LP	Q1 2023	$78m	last listed Q2 2023
D. E. Shaw & Co.	Q1 2014	$78m	last listed Q3 2017
Point72 Asset Management LP	Q4 2016	$63m	last listed Q2 2023
Arrowstreet Capital LP	Q1 2019	$56m	last listed Q3 2023
AQR Capital Management LLC	Q4 2015	$53m	last listed Q2 2020

What ALKS 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 ALKS →

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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