ProQR Therapeutics N.V. (PRQR) Ownership
PRQR ownership summary
as of October 18, 2026- Institutions
- 53.9% of shares outstanding
- Insiders
- 17.16% of shares outstanding
- Shares outstanding
- 141.1M
- Float
- 91.4M shares available to trade
- Short interest
- 2.67% 2.9M shares short
- Days to cover
- 4.76 short interest up 19.2% vs prior month
- Institutions 53.94%
- Insiders 17.16%
- Other investors 28.91%
PRQR top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners Gp LLC | 6.39% | 9.0M | $11.8M | +2.8M (+44.2%) | June 30, 2026 |
| 2 | Aberdeen Group PLC | 6.33% | 8.9M | $11.7M | +5.6M (+169.3%) | June 30, 2026 |
| 3 | Affinity Asset Advisors, LLC | 3.93% | 5.5M | $7.3M | +3.1M (+125.9%) | June 30, 2026 |
| 4 | Privium Fund Management B.V. | 3.91% | 5.5M | $7.2M | +52,875 (+1.0%) | June 30, 2026 |
| 5 | Ikarian Capital, LLC | 2.43% | 3.4M | $4.5M | +1.9M (+129.6%) | June 30, 2026 |
| 6 | Woodline Partners LP | 2.32% | 3.3M | $4.3M | +3.3M (0.0%) | June 30, 2026 |
| 7 | Heights Capital Management Inc | 1.96% | 2.8M | $3.6M | +2.8M (0.0%) | June 30, 2026 |
| 8 | Morgan Stanley - Brokerage Accounts | 1.25% | 1.8M | $2.3M | +467,440 (+36.0%) | June 30, 2026 |
| 9 | Sphera Funds Management Ltd. | 1.25% | 1.8M | $2.3M | +1.8M (0.0%) | June 30, 2026 |
| 10 | Kynam Capital Management, LP | 1.11% | 1.6M | $2.1M | — | June 30, 2026 |
| 11 | Dafna Capital Management LLC | 1.08% | 1.5M | $2.0M | −37,200 (−2.4%) | June 30, 2026 |
| 12 | Squadron Capital Management LLC | 1.07% | 1.5M | $2.0M | +1.5M (0.0%) | June 30, 2026 |
| 13 | Junked Platinum Investment Management Ltd | 0.88% | 1.2M | $1.6M | — | March 31, 2026 |
| 14 | Citadel Advisors Llc | 0.84% | 1.2M | $1.6M | +480,991 (+68.4%) | June 30, 2026 |
| 15 | Two Sigma Investments LLC | 0.81% | 1.1M | $1.5M | +219,858 (+23.9%) | June 30, 2026 |
| 16 | Eversept Partners, LP | 0.72% | 1.0M | $1.3M | +1.0M (0.0%) | June 30, 2026 |
| 17 | BOOTHBAY FUND MANAGEMENT, LLC | 0.67% | 949K | $1.2M | +593,453 (+167.0%) | June 30, 2026 |
| 18 | Diadema Partners LP | 0.66% | 926K | $1.2M | +745,933 (+414.2%) | June 30, 2026 |
| 19 | UBS Group AG | 0.45% | 639K | $837,408 | +333,979 (+109.4%) | June 30, 2026 |
| 20 | Delaware Management Holdings Inc | 0.44% | 620K | $812,200 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 16 holders added 26.6M shares and 1 cut 37K.
PRQR top mutual fund and ETF holders
9 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | abrdn World Healthcare | 4.47% | 6.3M | $8.3M | — | August 31, 2026 |
| 2 | abrdn Life Sciences Investors | 2.11% | 3.0M | $3.9M | +357,900 (+13.6%) | September 30, 2026 |
| 3 | Beleggingsfonds Hoofbosch | 0.57% | 800K | $1.0M | — | May 31, 2026 |
| 4 | Nomura Healthcare Fund Class I | 0.44% | 620K | $812,200 | — | August 31, 2026 |
| 5 | Xtrackers S&P 500 Swap ETF 1C | 0.04% | 56K | $73,921 | −416 (−0.7%) | December 31, 2025 |
| 6 | Xtrackers MSCI World Swap ETF 1C | 0.04% | 52K | $67,587 | −325 (−0.6%) | December 31, 2025 |
| 7 | Fidelity Nasdaq Composite Index | 0.02% | 24K | $31,254 | −47,619 (−66.6%) | August 31, 2026 |
| 8 | China Universal Gbl YLBJ QDII CNH | 0.01% | 12K | $16,375 | +12,500 (0.0%) | June 30, 2026 |
| 9 | Knights of Columbus U.S. All Cap Idx I | <0.01% | 405 | $531 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PRQR shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PRQR
Institutional investors own 53.9% of ProQR Therapeutics's shares and insiders 17.16%. The largest holder is Adage Capital Partners Gp LLC with 6.39% of the shares (9.0M), as of June 30, 2026. Among the top 20 institutions, 16 added shares and 1 reduced their stake in the latest filings. Short interest is 2.67% of the float, or 4.76 days of average trading volume. The share count rose 322.6% since 2014.
Related: PRQR analyst forecast, PRQR key metrics. See the PRQR stock overview for the latest quote and news.
PRQR ownership FAQ
Who owns the most ProQR Therapeutics stock?
The largest shareholders of ProQR Therapeutics are Adage Capital Partners Gp LLC (6.39%), Aberdeen Group PLC (6.33%), Affinity Asset Advisors, LLC (3.93%), Privium Fund Management B.V. (3.91%), Ikarian Capital, LLC (2.43%).
What percentage of ProQR Therapeutics is owned by institutions?
Institutions hold 53.9% of ProQR Therapeutics's shares outstanding; insiders hold 17.16%.
Which funds own ProQR Therapeutics?
The largest fund holders of ProQR Therapeutics are abrdn World Healthcare (4.47%), abrdn Life Sciences Investors (2.11%), Beleggingsfonds Hoofbosch (0.57%), Nomura Healthcare Fund Class I (0.44%), Xtrackers S&P 500 Swap ETF 1C (0.04%).
What is ProQR Therapeutics's short interest?
2.9M shares of ProQR Therapeutics were sold short, 2.67% of the float; at the average daily volume it would take 4.76 days to cover.
How many shares of ProQR Therapeutics are outstanding?
ProQR Therapeutics has 141.1M shares outstanding, of which 91.4M are in the public float.