Who owns ProMIS Neurosciences (PMN)
Which tracked institutional funds hold PMN, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PMN company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-17). 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
10 tracked funds added or opened PMN while 5 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
PMN’s largest tracked holder by dollar value, Jupiter Topco LLC, 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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in PMN 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 27 tracked filers holding PMN, 11 increased or opened the position and 9 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 PMN 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 2
- Jupiter Topco LLC$17M
- AMERIPRISE FINANCIAL INC$2M
Full exits 3
- JANUS HENDERSON GROUP PLC$16M
- Empery Asset Management, LP$766K
- HEIGHTS CAPITAL MANAGEMENT, INC$643K
Largest adds
- Ally Bridge Group (NY) LLC$3M
- Ikarian Capital, LLC$2M
- Woodline Partners LP$795K
- BOOTHBAY FUND MANAGEMENT, LLC$613K
- ADAGE CAPITAL PARTNERS GP, L.L.C.$393K
- Deep Track Capital, LP$384K
Largest trims
- GREAT POINT PARTNERS LLC$4M
- MILLENNIUM MANAGEMENT LLC$252K
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 |
|---|---|---|---|---|
| Jupiter Topco LLC new | 1,292,757 | $17M | 16.4% | 2026-Q2 |
| Deep Track Capital, LP | 835,655 | $11M | 10.6% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP | 696,378 | $9M | 8.8% | 2026-Q2 |
| Ally Bridge Group (NY) LLC added | 620,319 | $8M | 7.9% | 2026-Q2 |
| Trails Edge Capital Partners, LP | 557,103 | $7M | 7.1% | 2026-Q2 |
| Woodline Partners LP added | 441,911 | $6M | 5.6% | 2026-Q2 |
| Yu Fan | 329,760 | $4M | 4.2% | 2026-Q2 |
| SPHERA FUNDS MANAGEMENT LTD. | 325,591 | $4M | 4.1% | 2026-Q2 |
| Squadron Capital Management LLC | 324,977 | $4M | 4.1% | 2026-Q2 |
| Ikarian Capital, LLC added | 205,000 | $3M | 2.6% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC new | 185,700 | $2M | 2.4% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 164,275 | $2M | 2.1% | 2026-Q2 |
| 683 Capital Management, LLC added | 95,000 | $1M | 1.2% | 2026-Q2 |
| ADAR1 Capital Management, LLC trimmed | 92,850 | $1M | 1.2% | 2026-Q2 |
| GREAT POINT PARTNERS LLC trimmed | 86,150 | $1M | 1.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 62,078 | $817K | 0.8% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 56,045 | $738K | 0.7% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 11,371 | $150K | 0.1% | 2026-Q2 |
| Seven Fleet Capital Management LP | 10,600 | $139K | 0.1% | 2026-Q2 |
| MORGAN STANLEY new | 7,559 | $99K | 0.1% | 2026-Q2 |
| UBS Group AG trimmed | 691 | $9K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. | 360 | $5K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 218 | $3K | 0.0% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC trimmed | 94 | $1K | 0.0% | 2026-Q2 |
| Federation des caisses Desjardins du Quebec | 10 | $131 | 0.0% | 2026-Q2 |
| TD Waterhouse Canada Inc. | 5 | $66 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd new | 3 | $39 | 0.0% | 2026-Q2 |
| JANUS HENDERSON GROUP PLC new | 1,292,757 | $16M | 15.8% | 2026-Q1 stale (1 quarter behind) |
| Empery Asset Management, LP new | 60,353 | $766K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| HEIGHTS CAPITAL MANAGEMENT, INC added | 50,660 | $643K | 0.6% | 2026-Q1 stale (1 quarter behind) |
| Disciplined Equity Management, Inc. new | 1,000 | $441 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Tower Research Capital LLC (TRC) new | 20 | $136 | 0.0% | 2025-Q4 stale (2 quarters behind) |
| ARMISTICE CAPITAL, LLC added | 2,974,518 | $1M | 1.2% | 2025-Q3 stale (3 quarters behind) |
| CITADEL ADVISORS LLC added | 170,079 | $72K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| XTX Topco Ltd new | 67,687 | $29K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| HRT FINANCIAL LP new | 68,057 | $28K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Fiduciary Trust Co | 28,583 | $12K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| IEQ CAPITAL, LLC | 26,042 | $11K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| HOWARD FINANCIAL SERVICES, LTD. | 26,042 | $11K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| TWO SIGMA INVESTMENTS, LP new | 18,428 | $8K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| SCOTIA CAPITAL INC. | 12,122 | $5K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Claret Asset Management Corp | 11,330 | $5K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| COMMONWEALTH EQUITY SERVICES, LLC | 11,447 | $5K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| BANK OF AMERICA CORP /DE/ | 1,666 | $708 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| North Star Investment Management Corp. new | 500 | $212 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| NATIONAL BANK OF CANADA /FI/ | 88 | $37 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| JPMORGAN CHASE & CO added | 68 | $29 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Allostery Investments LP trimmed | 155,720 | $76K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| Graypoint LLC new | 52,833 | $26K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Kingsview Wealth Management, LLC new | 31,062 | $15K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 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.