27 institutions reported holding $78.0M of PROMIS NEUROSCIENCES INC (PMN) in SEC 13F filings for 2026-03-31. Largest institutional holders: JANUS HENDERSON GROUP PLC ($16.4M), Deep Track Capital, LP ($10.6M), WELLINGTON MANAGEMENT GROUP LLP ($8.8M), Trails Edge Capital Partners, LP ($7.1M), Ally Bridge Group (NY) LLC ($5.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | JANUS HENDERSON GROUP PLC | $16.4M | 1.3M | New |
| 2 | Deep Track Capital, LP | $10.6M | 835,655 | New |
| 3 | WELLINGTON MANAGEMENT GROUP LLP | $8.8M | 696,378 | New |
| 4 | Trails Edge Capital Partners, LP | $7.1M | 557,103 | New |
| 5 | Ally Bridge Group (NY) LLC | $5.3M | 414,219 | Added |
| 6 | Woodline Partners LP | $5.0M | 395,295 | New |
| 7 | GREAT POINT PARTNERS LLC | $4.7M | 371,402 | New |
| 8 | Yu Fan | $4.2M | 329,760 | New |
| 9 | SPHERA FUNDS MANAGEMENT LTD. | $4.1M | 325,591 | Added |
| 10 | Squadron Capital Management LLC | $4.1M | 324,977 | New |
| 11 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $1.8M | 139,275 | New |
| 12 | ADAR1 Capital Management, LLC | $1.2M | 95,350 | New |
| 13 | 683 Capital Management, LLC | $1.2M | 92,850 | New |
| 14 | MILLENNIUM MANAGEMENT LLC | $989,597 | 77,921 | New |
| 15 | Empery Asset Management, LP | $766,483 | 60,353 | New |
| 16 | Ikarian Capital, LLC | $698,500 | 55,000 | New |
| 17 | HEIGHTS CAPITAL MANAGEMENT, INC | $643,382 | 50,660 | New |
| 18 | BOOTHBAY FUND MANAGEMENT, LLC | $203,746 | 16,043 | New |
| 19 | Seven Fleet Capital Management LP | $134,620 | 10,600 | New |
| 20 | UBS Group AG | $16,510 | 1,300 | Trimmed |
| 21 | OSAIC HOLDINGS, INC. | $4,572 | 360 | Hold |
| 22 | Royal Bank of Canada | $4,000 | 268 | Added |
| 23 | Steward Partners Investment Advisory, LLC | $1,270 | 100 | New |
| 24 | Federation des caisses Desjardins du Quebec | $127 | 10 | Trimmed |
| 25 | TD Waterhouse Canada Inc. | $65 | 5 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31