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COLL in the 13F filings

Collegium Pharmaceutical Inc · CUSIP 19459J104

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
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
26
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed
10,192,303
combined, among listed positions
Reported value
$338m
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: 16 buyers (opened or added shares) and 15 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,222,049.

Managers listing COLL 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.

26 of 26 holders

ActionFiling
Janus Henderson Group Ltd1,825,651$60munder 0.1%Added+377,07318 May 2026 (the filing on sec.gov)
Invesco Ltd1,591,909$53munder 0.1%Added+416,86812 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,469,449$49m0.08%Trimmed-147,90014 May 2026 (the filing on sec.gov)
MFS Investment Management1,365,932$45munder 0.1%Added+53,27714 May 2026 (the filing on sec.gov)
Marshall Wace LLP748,812$25munder 0.1%Added+256,45215 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP703,528$23munder 0.1%Added+159,75514 May 2026 (the filing on sec.gov)
Two Sigma Investments LP590,116$20munder 0.1%Added+224,01715 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.530,698$18munder 0.1%Trimmed-123,17615 May 2026 (the filing on sec.gov)
Millennium Management LLC360,826$12munder 0.1%Added+290,54315 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC200,306$6.6munder 0.1%Trimmed-47,36915 May 2026 (the filing on sec.gov)
AQR Capital Management LLC135,216$4.5munder 0.1%Added+33,96215 May 2026 (the filing on sec.gov)
Citadel Advisors LLC121,366$4.0munder 0.1%Trimmed-9,76015 May 2026 (the filing on sec.gov)
Wellington Management Group LLP103,485$3.4munder 0.1%Trimmed-11,91415 May 2026 (the filing on sec.gov)
Man Group PLC72,182$2.4munder 0.1%Added+23,72515 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)66,454$2.2munder 0.1%Added+6,59215 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP58,646$1.9munder 0.1%Added+46,73515 May 2026 (the filing on sec.gov)
AllianceBernstein LP35,091$1.6munder 0.1%Added+8115 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP48,761$1.6munder 0.1%Added+37,01515 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc39,749$1.3munder 0.1%Added+3,72315 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC27,039$894kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP25,157$832kunder 0.1%Added+18,43015 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC21,308$705kunder 0.1%Trimmed-8,80015 May 2026 (the filing on sec.gov)
PDT Partners LLC14,382$476kunder 0.1%Held015 May 2026 (the filing on sec.gov)
Tudor Investment Corp13,956$462kunder 0.1%Trimmed-3,22015 May 2026 (the filing on sec.gov)
Quantbot Technologies LP11,680$386kunder 0.1%Trimmed-24,15013 May 2026 (the filing on sec.gov)
Page 1 of 2

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 (1)

Exited (6)

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.
2 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

02462017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
COLL by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20161$282kn.a.n.a.
Q3 20161$458kn.a.n.a.
Q4 20161$1.9mn.a.n.a.
Q1 20171$1.0mn.a.n.a.
Q2 20172$1.5mn.a.n.a.
Q3 20171$525kn.a.n.a.
Q4 20172$64mn.a.n.a.
Q1 20182$99mn.a.n.a.
Q2 20183$102mn.a.n.a.
Q3 20182$9.3mn.a.n.a.
Q4 20182$74mn.a.n.a.
Q1 20191$6.0mn.a.n.a.
Q2 20191$721kn.a.n.a.
Q3 20191$502kn.a.n.a.
Q4 20193$99mn.a.n.a.
Q1 20202$90mn.a.n.a.
Q2 20202$93mn.a.n.a.
Q3 20202$110mn.a.n.a.
Q4 20202$103mn.a.n.a.
Q1 20212$98mn.a.n.a.
Q2 20213$99mn.a.n.a.
Q3 20211$81mn.a.n.a.
Q4 20212$71mn.a.n.a.
Q1 20221$1.1mn.a.n.a.
Q2 20222$40mn.a.n.a.
Q3 20223$32mn.a.n.a.
Q4 20223$35mn.a.n.a.
Q1 20232$31mn.a.n.a.
Q2 20231$224kn.a.n.a.
Q3 20231$26mn.a.n.a.
Q4 20231$43m10
Q1 20244$59m40
Q2 20243$52m30
Q3 20242$67m21
Q4 20242$48m11
Q1 20252$54m11
Q2 20251$45m01
Q3 20255$60m40
Q4 20256$209m1814
Q1 20265$157m1615
Q2 20264$180m1118

Compare with…

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

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

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