Who owns PRQR
Which tracked institutional funds hold PRQR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See PRQR 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
The tracked-fund tape on PRQR is one-sided between 2026-Q1 and 2026-Q2: 23 added or opened and 3 trimmed or exited — on balance accumulating.
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
PRQR’s largest tracked holder by dollar value, ADAGE CAPITAL PARTNERS GP, L.L.C., 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 PRQR 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 67 tracked filers holding PRQR, 35 increased or opened the position and 24 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 PRQR 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 7
- Woodline Partners LP$6M
- HEIGHTS CAPITAL MANAGEMENT, INC$5M
- SPHERA FUNDS MANAGEMENT LTD.$3M
- Squadron Capital Management LLC$3M
- 683 Capital Management, LLC$3M
- Eversept Partners, LP$2M
Full exits 2
- Sio Capital Management, LLC$3M
- Walleye Capital LLC$984K
Largest adds
- Aberdeen Group plc$11M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$7M
- Affinity Asset Advisors, LLC$6M
- Ikarian Capital, LLC$4M
- DIADEMA PARTNERS LP$1M
- Privium Fund Management B.V.$1M
Largest trims
- Point72 Asset Management, L.P.$1M
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 |
|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 9,015,897 | $17M | 13.3% | 2026-Q2 |
| Aberdeen Group plc added | 8,932,507 | $17M | 13.1% | 2026-Q2 |
| Affinity Asset Advisors, LLC added | 5,543,936 | $10M | 8.1% | 2026-Q2 |
| Privium Fund Management B.V. added | 5,520,024 | $10M | 8.1% | 2026-Q2 |
| Ikarian Capital, LLC added | 3,425,930 | $6M | 5.0% | 2026-Q2 |
| Woodline Partners LP added | 3,277,143 | $6M | 4.8% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 2,762,430 | $5M | 4.1% | 2026-Q2 |
| MORGAN STANLEY added | 1,767,215 | $3M | 2.6% | 2026-Q2 |
| SPHERA FUNDS MANAGEMENT LTD. new | 1,757,458 | $3M | 2.6% | 2026-Q2 |
| Kynam Capital Management, LP | 1,566,317 | $3M | 2.3% | 2026-Q2 |
| DAFNA Capital Management LLC trimmed | 1,530,361 | $3M | 2.2% | 2026-Q2 |
| Squadron Capital Management LLC new | 1,511,496 | $3M | 2.2% | 2026-Q2 |
| 683 Capital Management, LLC new | 1,393,067 | $3M | 2.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,184,314 | $2M | 1.7% | 2026-Q2 |
| PLATINUM INVESTMENT MANAGEMENT LTD trimmed | 1,159,428 | $2M | 1.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,138,715 | $2M | 1.7% | 2026-Q2 |
| Eversept Partners, LP new | 1,022,265 | $2M | 1.5% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 948,736 | $2M | 1.4% | 2026-Q2 |
| DIADEMA PARTNERS LP added | 926,016 | $2M | 1.4% | 2026-Q2 |
| UBS Group AG added | 639,243 | $1M | 0.9% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 620,000 | $1M | 0.9% | 2026-Q2 |
| M28 Capital Management LP | 599,793 | $1M | 0.9% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 571,073 | $1M | 0.8% | 2026-Q2 |
| Lynx1 Capital Management LP added | 521,413 | $970K | 0.8% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 455,104 | $846K | 0.7% | 2026-Q2 |
| STEMPOINT CAPITAL LP new | 431,054 | $802K | 0.6% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 275,631 | $513K | 0.4% | 2026-Q2 |
| Monaco Asset Management SAM trimmed | 244,487 | $455K | 0.4% | 2026-Q2 |
| Persistent Asset Partners Ltd added | 236,454 | $440K | 0.3% | 2026-Q2 |
| Palo Alto Investors LP | 188,807 | $351K | 0.3% | 2026-Q2 |
| Burkehill Global Management, LP new | 176,243 | $328K | 0.3% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 161,004 | $299K | 0.2% | 2026-Q2 |
| FRANKLIN STREET ADVISORS INC /NC | 150,000 | $279K | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ | 108,762 | $202K | 0.2% | 2026-Q2 |
| OneDigital Investment Advisors LLC | 85,000 | $158K | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd added | 84,806 | $158K | 0.1% | 2026-Q2 |
| RFG Advisory, LLC added | 64,000 | $119K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 58,040 | $108K | 0.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 57,997 | $108K | 0.1% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 50,652 | $94K | 0.1% | 2026-Q2 |
| Keating Financial Advisory Services, Inc. added | 47,552 | $88K | 0.1% | 2026-Q2 |
| Velan Capital Investment Management LP | 45,000 | $84K | 0.1% | 2026-Q2 |
| GUGGENHEIM CAPITAL LLC added | 39,954 | $74K | 0.1% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC added | 35,241 | $66K | 0.1% | 2026-Q2 |
| Axiom Investment Management LLC trimmed | 31,000 | $58K | 0.0% | 2026-Q2 |
| MOODY LYNN LIEBERSON & WALKER, LLC | 25,000 | $46K | 0.0% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC added | 22,095 | $41K | 0.0% | 2026-Q2 |
| Mariner, LLC | 20,169 | $38K | 0.0% | 2026-Q2 |
| Verdad Advisers, LP new | 19,100 | $36K | 0.0% | 2026-Q2 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P added | 17,500 | $33K | 0.0% | 2026-Q2 |
| TWO SIGMA SECURITIES, LLC added | 16,016 | $30K | 0.0% | 2026-Q2 |
| Atom Investors LP | 13,107 | $24K | 0.0% | 2026-Q2 |
| China Universal Asset Management Co., Ltd. trimmed | 12,500 | $23K | 0.0% | 2026-Q2 |
| WETZEL INVESTMENT ADVISORS, INC. new | 10,500 | $20K | 0.0% | 2026-Q2 |
| TRUIST FINANCIAL CORP | 10,000 | $19K | 0.0% | 2026-Q2 |
| ADAR1 Capital Management, LLC | 10,000 | $19K | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN | 4,000 | $7K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 3,305 | $6K | 0.0% | 2026-Q2 |
| Hilton Head Capital Partners, LLC | 1,404 | $3K | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC | 1,000 | $2K | 0.0% | 2026-Q2 |
| PFS Partners, LLC | 1,000 | $2K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 515 | $958 | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO | 283 | $518 | 0.0% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 271 | $504 | 0.0% | 2026-Q2 |
| TD Waterhouse Canada Inc. | 40 | $70 | 0.0% | 2026-Q2 |
| Medallion Wealth Advisors, LLC | 10 | $19 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd trimmed | 4 | $7 | 0.0% | 2026-Q2 |
| Siren, L.L.C. | 1,552,183 | $3M | 2.6% | 2025-Q3 stale (3 quarters behind) |
| Sio Capital Management, LLC trimmed | 1,954,715 | $3M | 2.5% | 2026-Q1 stale (1 quarter behind) |
| ArrowMark Colorado Holdings LLC trimmed | 1,164,722 | $2M | 1.9% | 2025-Q4 stale (2 quarters behind) |
| MACQUARIE GROUP LTD | 620,000 | $1M | 1.0% | 2025-Q3 stale (3 quarters behind) |
| Walleye Capital LLC added | 607,529 | $984K | 0.8% | 2026-Q1 stale (1 quarter behind) |
| TWO SIGMA ADVISERS, LP added | 452,400 | $914K | 0.7% | 2025-Q4 stale (2 quarters behind) |
| NORTHERN TRUST CORP trimmed | 291,314 | $472K | 0.4% | 2026-Q1 stale (1 quarter behind) |
| MARSHALL WACE, LLP added | 115,945 | $188K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| GSA CAPITAL PARTNERS LLP added | 114,256 | $185K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Graham Capital Management, L.P. new | 91,553 | $148K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Vontobel Holding Ltd. added | 63,979 | $131K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| XTX Topco Ltd trimmed | 77,287 | $125K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Cubist Systematic Strategies, LLC added | 52,191 | $111K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Invesco Ltd. added | 44,592 | $72K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| BANK OF MONTREAL /CAN/ | 30,000 | $61K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| FIFTH THIRD BANCORP | 30,000 | $61K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Squarepoint Ops LLC trimmed | 31,518 | $51K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CITIGROUP INC new | 22,724 | $48K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| NINE MASTS CAPITAL Ltd new | 29,518 | $48K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| PNC Financial Services Group, Inc. added | 20,097 | $41K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| GROUP ONE TRADING LLC trimmed | 18,924 | $31K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP new | 12,297 | $25K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Engineers Gate Manager LP trimmed | 10,730 | $22K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| Kestra Advisory Services, LLC | 10,000 | $21K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 12,206 | $20K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| OSAIC HOLDINGS, INC. trimmed | 6,000 | $14K | 0.0% | 2025-Q3 stale (3 quarters behind) |
| BlackRock, Inc. | 3,945 | $6K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Tower Research Capital LLC (TRC) added | 1,211 | $2K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Activest Wealth Management | 100 | $213 | 0.0% | 2025-Q3 stale (3 quarters behind) |
| Rockefeller Capital Management L.P. | 34 | $69 | 0.0% | 2025-Q4 stale (2 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.