PMN Institutional Ownership & Shareholders
PROMIS NEUROSCIENCES INC (PMN) is currently held by 27 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $83.66M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Janus Henderson Group Plc is currently the largest disclosed institutional shareholder of PMN tracked by InsiderSet, reporting ownership valued at approximately $16.42M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $4.41M, representing an estimated loss of -73.15% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 88% of the total disclosed PMN value among the investors covered in this analysis. Major shareholders include Janus Henderson Group Plc, Deep Track Capital, Lp, Wellington Management Group Llp, and several other long-term asset managers with concentrated positions in PROMIS NEUROSCIENCES INC (PMN).
This page ranks the largest institutional PMN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
27
Total Reported Value
$83.66M
Largest Holder
Janus Henderson Group Plc
Largest Position
$16.42M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
31
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Janus Henderson Group Plc | 0.01% | 1,292,757 | $16,418,014 | $4,408,301 | -$12,009,713 | -73.15% | |
| Deep Track Capital, Lp | 0.16% | 835,655 | $10,997,220 | $2,849,584 | -$8,147,636 | -74.09% | |
| Wellington Management Group Llp | 0.00% | 696,378 | $9,164,334 | $2,374,649 | -$6,789,685 | -74.09% | |
| Ally Bridge Group (Ny) Llc | 10.52% | 620,319 | $8,163,398 | $2,115,288 | -$6,048,110 | -74.09% | |
| Trails Edge Capital Partners, Lp | 1.16% | 557,103 | $7,331,475 | $1,899,721 | -$5,431,754 | -74.09% | |
| Woodline Partners Lp | 0.02% | 441,911 | $5,815,548 | $1,506,917 | -$4,308,631 | -74.09% | |
| Yu Fan | 4.02% | 329,760 | $4,339,642 | $1,124,482 | -$3,215,160 | -74.09% | |
| Sphera Funds Management Ltd. | 0.61% | 325,591 | $4,284,784 | $1,110,265 | -$3,174,519 | -74.09% | |
| Squadron Capital Management Llc | 1.46% | 324,977 | $4,276,697 | $1,108,172 | -$3,168,525 | -74.09% | |
| Ikarian Capital, Llc | 0.44% | 205,000 | $2,697,801 | $699,050 | -$1,998,751 | -74.09% | |
| Ameriprise Financial Inc | 0.00% | 185,700 | $2,443,812 | $633,237 | -$1,810,575 | -74.09% | |
| Adage Capital Partners Gp, L.L.C. | 0.00% | 164,275 | $2,161,859 | $560,178 | -$1,601,681 | -74.09% | |
| 683 Capital Management, Llc | 0.11% | 95,000 | $1,250,200 | $323,950 | -$926,250 | -74.09% | |
| Adar1 Capital Management, Llc | 0.06% | 92,850 | $1,221,906 | $316,619 | -$905,288 | -74.09% | |
| Great Point Partners Llc | 0.27% | 86,150 | $1,133,734 | $293,772 | -$839,963 | -74.09% | |
| Boothbay Fund Management, Llc | 0.02% | 62,078 | $816,946 | $211,686 | -$605,260 | -74.09% | |
| Millennium Management Llc | 0.00% | 56,045 | $737,552 | $191,113 | -$546,439 | -74.09% | |
| Bank Of Montreal | 0.00% | 11,371 | $149,642 | $38,775 | -$110,867 | -74.09% | |
| Seven Fleet Capital Management Lp | 0.02% | 10,600 | $139,496 | $36,146 | -$103,350 | -74.09% | |
| Morgan Stanley | 0.00% | 7,559 | $99,476 | $25,776 | -$73,700 | -74.09% | |
| Ubs Group Ag | 0.00% | 691 | $9,093 | $2,356 | -$6,737 | -74.09% | |
| Osaic Holdings, Inc. | 0.00% | 360 | $4,737 | $1,228 | -$3,509 | -74.08% | |
| Royal Bank Of Canada | 0.00% | 218 | $3,000 | $743 | -$2,257 | -75.22% | |
| Steward Partners Investment Advisory, Llc | 0.00% | 94 | $1,237 | $321 | -$916 | -74.09% | |
| Federation Des Caisses Desjardins Du Quebec | 0.00% | 10 | $131 | $34 | -$97 | -73.97% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 10 | $108 | $34 | -$74 | -68.43% | |
| Td Waterhouse Canada Inc. | 0.00% | 5 | $46 | $17 | -$29 | -62.93% |
Frequently asked questions about PMN
Who are the largest institutional holders of PMN?
The largest institutional holders of PMN reported in the latest SEC Form 13F filings include Janus Henderson Group Plc, Deep Track Capital, Lp, Wellington Management Group Llp, Ally Bridge Group (Ny) Llc, and Trails Edge Capital Partners, Lp. InsiderSet ranks institutional holders by their latest reported PMN position.
What is PMN institutional ownership?
This page tracks PMN positions reported by institutional investment managers through SEC Form 13F. PROMIS NEUROSCIENCES INC (PMN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own PMN?
InsiderSet currently tracks 27 institutional managers reporting PMN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of PMN shareholders.
How much PMN stock do institutions own?
Institutional investment managers disclosed approximately $83.66M in PMN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was PMN institutional ownership last updated?
The latest PMN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional PMN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its PMN position after the reporting date.
Are institutions buying or selling PMN?
Institutional buying and selling can be analyzed by comparing PMN positions across consecutive 13F reporting periods. InsiderSet's PMN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View PMN ownership changes.
How has PMN institutional ownership changed over time?
InsiderSet tracks PMN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.