Who owns Collegium Pharmaceutical (COLL)
Which tracked institutional funds hold COLL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See COLL company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
80 tracked funds added or opened COLL while 41 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
COLL’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes COLL more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in COLL divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 259 tracked filers holding COLL, 155 increased or opened the position and 128 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in COLL between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 9
- Jupiter Topco LLC$78M
- GOLDENTREE ASSET MANAGEMENT LP$27M
- FIRST TRUST ADVISORS LP$6M
- Point72 Asset Management, L.P.$4M
- Woodline Partners LP$3M
- Cresset Asset Management, LLC$1M
Full exits 23
- JANUS HENDERSON GROUP PLC$60M
- LSV ASSET MANAGEMENT$11M
- EMERALD MUTUAL FUND ADVISERS TRUST$10M
- Pacer Advisors, Inc.$9M
- HUSSMAN STRATEGIC ADVISORS, INC.$3M
- BESSEMER GROUP INC$3M
Largest adds
- BlackRock, Inc.$27M
- Invesco Ltd.$17M
- PRINCIPAL FINANCIAL GROUP INC$16M
- MILLENNIUM MANAGEMENT LLC$15M
- FULLER & THALER ASSET MANAGEMENT, INC.$10M
- STATE STREET CORP$8M
Largest trims
- TWO SIGMA INVESTMENTS, LP$16M
- MARSHALL WACE, LLP$16M
- EMERALD ADVISERS, LLC$13M
- D. E. Shaw & Co., Inc.$5M
- Qube Research & Technologies Ltd$5M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$4M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 5,441,202 | $197M | 12.6% | 2026-Q2 |
| Jupiter Topco LLC new | 2,147,072 | $78M | 5.0% | 2026-Q2 |
| Invesco Ltd. added | 1,882,499 | $68M | 4.4% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,632,781 | $59M | 3.8% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 1,632,360 | $59M | 3.8% | 2026-Q2 |
| STATE STREET CORP added | 1,528,881 | $55M | 3.5% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 1,405,567 | $51M | 3.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,381,261 | $50M | 3.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,366,549 | $49M | 3.2% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC trimmed | 1,361,228 | $49M | 3.1% | 2026-Q2 |
| Rubric Capital Management LP | 1,279,611 | $46M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 890,886 | $32M | 2.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 837,877 | $30M | 1.9% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 760,252 | $28M | 1.8% | 2026-Q2 |
| GOLDENTREE ASSET MANAGEMENT LP new | 744,889 | $27M | 1.7% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 740,081 | $27M | 1.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 736,925 | $27M | 1.7% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 621,920 | $23M | 1.4% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 556,927 | $20M | 1.3% | 2026-Q2 |
| MORGAN STANLEY added | 534,756 | $19M | 1.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 491,627 | $18M | 1.1% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 486,601 | $18M | 1.1% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 431,447 | $16M | 1.0% | 2026-Q2 |
| NORTHERN TRUST CORP added | 391,783 | $14M | 0.9% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 364,999 | $13M | 0.8% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 338,383 | $12M | 0.8% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 332,065 | $12M | 0.8% | 2026-Q2 |
| Assenagon Asset Management S.A. trimmed | 308,917 | $11M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 272,995 | $10M | 0.6% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 253,353 | $9M | 0.6% | 2026-Q2 |
| Bank of New York Mellon Corp added | 234,960 | $9M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 230,698 | $8M | 0.5% | 2026-Q2 |
| UBS Group AG added | 206,070 | $7M | 0.5% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 200,356 | $7M | 0.5% | 2026-Q2 |
| Hillsdale Investment Management Inc. added | 191,600 | $7M | 0.4% | 2026-Q2 |
| THIRD AVENUE MANAGEMENT LLC added | 182,645 | $7M | 0.4% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 174,294 | $6M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 159,240 | $6M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board added | 155,271 | $6M | 0.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 149,802 | $5M | 0.3% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC added | 129,416 | $5M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 116,828 | $4M | 0.3% | 2026-Q2 |
| Uniplan Investment Counsel, Inc. added | 116,362 | $4M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. new | 114,006 | $4M | 0.3% | 2026-Q2 |
| Ballast Asset Management, LP trimmed | 112,111 | $4M | 0.3% | 2026-Q2 |
| Nuveen, LLC added | 107,947 | $4M | 0.2% | 2026-Q2 |
| BARCLAYS PLC added | 107,670 | $4M | 0.2% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 106,704 | $4M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 103,679 | $4M | 0.2% | 2026-Q2 |
| Quantinno Capital Management LP added | 98,592 | $4M | 0.2% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 94,420 | $3M | 0.2% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 92,241 | $3M | 0.2% | 2026-Q2 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 89,443 | $3M | 0.2% | 2026-Q2 |
| FMR LLC added | 87,289 | $3M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 85,279 | $3M | 0.2% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT added | 2,500,000 | $3M | 0.2% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 83,854 | $3M | 0.2% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 80,112 | $3M | 0.2% | 2026-Q2 |
| Gotham Asset Management, LLC added | 76,441 | $3M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 75,576 | $3M | 0.2% | 2026-Q2 |
| Smith Group Asset Management, LLC added | 73,896 | $3M | 0.2% | 2026-Q2 |
| CREDIT AGRICOLE S A | 73,444 | $3M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 72,555 | $3M | 0.2% | 2026-Q2 |
| Woodline Partners LP new | 72,139 | $3M | 0.2% | 2026-Q2 |
| Corient Private Wealth LP added | 71,898 | $3M | 0.2% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC added | 71,523 | $3M | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 71,063 | $3M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 68,592 | $2M | 0.2% | 2026-Q2 |
| Artemis Investment Management LLP added | 68,573 | $2M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 66,116 | $2M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 65,000 | $2M | 0.2% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 58,267 | $2M | 0.1% | 2026-Q2 |
| Empowered Funds, LLC trimmed | 56,504 | $2M | 0.1% | 2026-Q2 |
| MARTINGALE ASSET MANAGEMENT L P added | 55,155 | $2M | 0.1% | 2026-Q2 |
| EASTERN BANK | 54,843 | $2M | 0.1% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P trimmed | 52,911 | $2M | 0.1% | 2026-Q2 |
| ZACKS INVESTMENT MANAGEMENT added | 52,672 | $2M | 0.1% | 2026-Q2 |
| NewEdge Wealth, LLC added | 48,989 | $2M | 0.1% | 2026-Q2 |
| VANGUARD GROUP INC added | 2,256,254 | $104M | 6.7% | 2025-Q4 stale (2 quarters behind) |
| JANUS HENDERSON GROUP PLC added | 1,825,651 | $60M | 3.9% | 2026-Q1 stale (1 quarter behind) |
| LSV ASSET MANAGEMENT trimmed | 345,200 | $11M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| EMERALD MUTUAL FUND ADVISERS TRUST trimmed | 306,074 | $10M | 0.6% | 2026-Q1 stale (1 quarter behind) |
| Pacer Advisors, Inc. trimmed | 308,395 | $9M | 0.6% | 2026-Q1 stale (1 quarter behind) |
| JANE STREET GROUP, LLC trimmed | 190,763 | $9M | 0.6% | 2025-Q4 stale (2 quarters behind) |
| J. Goldman & Co LP new | 243,448 | $7M | 0.5% | 2025-Q2 stale (4 quarters behind) |
| Brandywine Global Investment Management, LLC trimmed | 130,545 | $6M | 0.4% | 2025-Q4 stale (2 quarters behind) |
| NORGES BANK new | 112,500 | $5M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| ExodusPoint Capital Management, LP added | 105,185 | $5M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| HUSSMAN STRATEGIC ADVISORS, INC. added | 105,000 | $3M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| BESSEMER GROUP INC added | 98,020 | $3M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Tejara Capital Ltd trimmed | 77,000 | $3M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 54,825 | $3M | 0.2% | 2025-Q4 stale (2 quarters behind) |
| TWO SIGMA ADVISERS, LP trimmed | 53,000 | $2M | 0.2% | 2025-Q4 stale (2 quarters behind) |
| Man Group plc added | 72,182 | $2M | 0.2% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP added | 48,704 | $2M | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Trexquant Investment LP trimmed | 68,114 | $2M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| SG Americas Securities, LLC added | 66,397 | $2M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 61,742 | $2M | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Walleye Capital LLC trimmed | 39,708 | $2M | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Jackson Creek Investment Advisors LLC added | 38,846 | $2M | 0.1% | 2025-Q4 stale (2 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.