L3VLUP
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ALKS in the 13F filings

Alkermes PLC · CUSIP G01767105

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Pharmaceutical preparations
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
29
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 8 listed it in both
Shares listed
27,801,402
combined, among listed positions
Reported value
$981m
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: 12 buyers (opened or added shares) and 20 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -4,111,130.

Managers listing ALKS 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
Renaissance Technologies LLC6,160,428$218m0.34%Trimmed-507,60014 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc4,664,576$165munder 0.1%Trimmed-4,334,38715 May 2026 (the filing on sec.gov)
Wellington Management Group LLP2,970,166$105munder 0.1%Trimmed-50,27615 May 2026 (the filing on sec.gov)
Holocene Advisors LP2,317,326$82m0.20%Newnew15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC2,241,584$79munder 0.1%Added+1,043,31615 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,323,747$47munder 0.1%Trimmed-31,50615 May 2026 (the filing on sec.gov)
Artisan Partners LP1,111,741$39m0.06%Trimmed-237,38113 May 2026 (the filing on sec.gov)
Marshall Wace LLP999,322$35munder 0.1%Added+869,42315 May 2026 (the filing on sec.gov)
Two Sigma Investments LP780,683$28munder 0.1%Trimmed-432,71415 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.710,297$25munder 0.1%Trimmed-200,97515 May 2026 (the filing on sec.gov)
Man Group PLC625,046$22munder 0.1%Added+312,53415 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC586,775$21munder 0.1%Trimmed-92,85815 May 2026 (the filing on sec.gov)
Woodline Partners LP558,567$20m0.07%Held015 May 2026 (the filing on sec.gov)
Invesco Ltd524,275$19munder 0.1%Trimmed-14,44112 May 2026 (the filing on sec.gov)
AQR Capital Management LLC383,977$14munder 0.1%Trimmed-130,34715 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC277,619$9.8munder 0.1%Trimmed-818,22715 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC227,939$8.1munder 0.1%Trimmed-294,15813 May 2026 (the filing on sec.gov)
AllianceBernstein LP260,935$7.3munder 0.1%Added+45,08115 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP204,324$7.2m0.06%Newnew14 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC197,220$7.0munder 0.1%Added+44,44827 Oct 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP173,626$6.1munder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Moore Capital Management LP158,499$5.6m0.11%Newnew15 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd154,016$5.4munder 0.1%Added+8,21218 May 2026 (the filing on sec.gov)
Bridgewater Associates LP83,806$3.0munder 0.1%Trimmed-260,64615 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP56,795$2.0munder 0.1%Added+41,92215 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 (5)

Exited (5)

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.
8 in Q3 2024 to 9 in Q2 2026

Tracked managers listing it, at least.

0510152014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ALKS by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20139$1.7bnn.a.n.a.
Q3 20135$1.9bnn.a.n.a.
Q4 20135$2.3bnn.a.n.a.
Q1 20145$2.9bnn.a.n.a.
Q2 20147$3.4bnn.a.n.a.
Q3 20147$3.0bnn.a.n.a.
Q4 20147$4.2bnn.a.n.a.
Q1 20158$4.5bnn.a.n.a.
Q2 20159$4.8bnn.a.n.a.
Q3 201510$4.4bnn.a.n.a.
Q4 201512$5.9bnn.a.n.a.
Q1 201610$2.6bnn.a.n.a.
Q2 20167$3.1bnn.a.n.a.
Q3 20169$3.4bnn.a.n.a.
Q4 201612$4.0bnn.a.n.a.
Q1 20179$4.1bnn.a.n.a.
Q2 201710$4.1bnn.a.n.a.
Q3 20178$3.5bnn.a.n.a.
Q4 20179$3.7bnn.a.n.a.
Q1 20187$3.9bnn.a.n.a.
Q2 20186$2.9bnn.a.n.a.
Q3 20186$3.0bnn.a.n.a.
Q4 20189$1.9bnn.a.n.a.
Q1 201911$2.3bnn.a.n.a.
Q2 201911$1.2bnn.a.n.a.
Q3 20199$1.1bnn.a.n.a.
Q4 201911$1.2bnn.a.n.a.
Q1 202014$948mn.a.n.a.
Q2 202014$1.3bnn.a.n.a.
Q3 202010$1.0bnn.a.n.a.
Q4 202013$1.2bnn.a.n.a.
Q1 202112$1.1bnn.a.n.a.
Q2 202113$1.3bnn.a.n.a.
Q3 202111$1.4bnn.a.n.a.
Q4 20219$1.1bnn.a.n.a.
Q1 202210$1.2bnn.a.n.a.
Q2 202212$903mn.a.n.a.
Q3 202210$547mn.a.n.a.
Q4 202212$831mn.a.n.a.
Q1 202312$708mn.a.n.a.
Q2 202312$703mn.a.n.a.
Q3 202312$778mn.a.n.a.
Q4 20237$754m44
Q1 20248$927m16
Q2 20247$823m43
Q3 20248$955m44
Q4 20247$801m43
Q1 20259$813m72
Q2 20259$642m36
Q3 202510$703m64
Q4 20259$566m1814
Q1 202610$436m1220
Q2 20269$1.2bn1320

Compare with…

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

ALKS and LLY →ALKS and JNJ →ALKS and VRTX →Choose a stock to compare with ALKS →

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