74 institutions reported holding $56.9M of PROQR THRAPEUTICS N V (PRQR) in SEC 13F filings for 2026-03-31. Largest institutional holders: ADAGE CAPITAL PARTNERS GP, L.L.C. ($10.1M), Privium Fund Management B.V. ($8.9M), Aberdeen Group plc ($5.4M), Affinity Asset Advisors, LLC ($4.0M), Sio Capital Management, LLC ($3.2M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $10.1M | 6.3M | Hold |
| 2 | Privium Fund Management B.V. | $8.9M | 5.5M | Added |
| 3 | Aberdeen Group plc | $5.4M | 3.3M | Added |
| 4 | Affinity Asset Advisors, LLC | $4.0M | 2.5M | Hold |
| 5 | Sio Capital Management, LLC | $3.2M | 2.0M | Trimmed |
| 6 | DAFNA Capital Management LLC | $2.5M | 1.6M | Hold |
| 7 | Kynam Capital Management, LP | $2.5M | 1.6M | Hold |
| 8 | Ikarian Capital, LLC | $2.4M | 1.5M | Hold |
| 9 | MORGAN STANLEY | $2.1M | 1.3M | Trimmed |
| 10 | PLATINUM INVESTMENT MANAGEMENT LTD | $2.0M | 1.2M | Hold |
| 11 | TWO SIGMA INVESTMENTS, LP | $1.5M | 918,857 | Added |
| 12 | Point72 Asset Management, L.P. | $1.2M | 755,842 | Trimmed |
| 13 | CITADEL ADVISORS LLC | $1.1M | 703,323 | Added |
| 14 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $1.0M | 620,000 | Hold |
| 15 | Walleye Capital LLC | $984,197 | 607,529 | Added |
| 16 | M28 Capital Management LP | $971,665 | 599,793 | Trimmed |
| 17 | RAYMOND JAMES FINANCIAL INC | $884,648 | 546,079 | Added |
| 18 | Monaco Asset Management SAM | $678,461 | 418,803 | Trimmed |
| 19 | BOOTHBAY FUND MANAGEMENT, LLC | $575,558 | 355,283 | Hold |
| 20 | UBS Group AG | $494,528 | 305,264 | Trimmed |
| 21 | NORTHERN TRUST CORP | $471,929 | 291,314 | Trimmed |
| 22 | MILLENNIUM MANAGEMENT LLC | $314,679 | 194,246 | Trimmed |
| 23 | Palo Alto Investors LP | $305,867 | 188,807 | Hold |
| 24 | BANK OF AMERICA CORP /DE/ | $299,878 | 185,110 | Added |
| 25 | DIADEMA PARTNERS LP | $291,734 | 180,083 | Added |
Source: SEC Form 13F filings · as of 2026-03-31