ProQR Therapeutics PRQR Institutional Ownership

NASDAQ PRQR

$1.35 -0.02 (-1.82%)

As of: Oct 22, 2026 · 12:00 PM EDT

Institutions by Trading Activity

69 Institutions

Increased 37 53.6%

Unchanged 22 31.9%

Reduced 10 14.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

57.01%

▲+23.86 pp QoQ

Shares Held by Institutions

60.05Mn

of 105.33Mn outstanding

▲+71.98% QoQ

Shares Outstanding

105.33Mn

45.28Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+1 vs prior quarter

Net Shares Added (QoQ)

+25.13Mn

accumulated since last quarter

Value of Holdings

$82.87Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

ProQR Therapeutics N.V. (NASDAQ:PRQR) appeared in the 13F filings of 69 institutional investors for the quarter ended June 30, 2026.

Collectively, these holders controlled 57.01% of ProQR Therapeutics' outstanding shares in Q2 2026, up from 33.15% in Q1 2026.
Total shares held in PRQR rose 71.98% from Q1 2026; the number of holders rose 15.00% from Q2 2025.
Of the 69 holders, 37 added to their positions, 10 reduced their stakes and 22 left their positions unchanged in Q2 2026.
Institutional investors held 60.05Mn shares of ProQR Therapeutics in total at the end of Q2 2026, up 25.13Mn from the prior quarter and up 23.21Mn from a year earlier.
Adage Capital Partners GP, L.L.C. was the top holder of ProQR Therapeutics as of June 30, 2026, with 9.02Mn shares, or 8.56% of shares outstanding.
Among holders that already owned ProQR Therapeutics, the biggest buyers in Q2 2026 were Aberdeen Group plc (+5.62Mn shares), Affinity Asset Advisors, LLC (+3.09Mn shares), Adage Capital Partners GP, L.L.C. (+2.76Mn shares), Ikarian Capital, LLC (+1.93Mn shares) and Diadema Partners LP (+745.93K shares).
The biggest cuts to PRQR positions during Q2 2026 came from Point72 Asset Management, L.P. (-705.19K shares), Monaco Asset Management SAM (-174.32K shares), Bank of America Corp (-127.07K shares), Platinum Investment Management LTD (-76.09K shares) and DAFNA Capital Management LLC (-37.2K shares).
ProQR Therapeutics' 10 largest institutional shareholders as of Q2 2026 were Adage Capital Partners GP, L.L.C. (9.02Mn shares), Aberdeen Group plc (8.93Mn shares), Affinity Asset Advisors, LLC (5.54Mn shares), Privium Fund Management B.V. (5.52Mn shares), Ikarian Capital, LLC (3.43Mn shares), Woodline Partners LP (3.28Mn shares), Heights Capital Management, Inc (2.76Mn shares), Morgan Stanley (1.77Mn shares), Sphera Funds Management LTD. (1.76Mn shares) and Kynam Capital Management, LP (1.57Mn shares), per Business Quant data.

Form 13F Holdings

69 Institutional Holders

Report period 30 Jun, 2026

Total shares held 60.05Mn

Of outstanding 57.01%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	ADAGE CAPITAL PARTNERS GP, L.L.C.	0001165408	9,015,897	8.56%	▲2,762,430	+44.17%	$16.77Mn
2	Aberdeen Group plc	0001716774	8,932,507	8.48%	▲5,615,542	+169.30%	$16.61Mn
3	Affinity Asset Advisors, LLC	0001773195	5,543,936	5.26%	▲3,089,658	+125.89%	$10.31Mn
4	Privium Fund Management B.V.	0001795097	5,520,024	5.24%	▲52,875	+0.97%	$10.27Mn
5	Ikarian Capital, LLC	0001778253	3,425,930	3.25%	▲1,933,701	+129.58%	$6.37Mn
6	Woodline Partners LP	0001784547	3,277,143	3.11%	▲3,277,143	0.00%	$6.10Mn
7	HEIGHTS CAPITAL MANAGEMENT, INC	0001081698	2,762,430	2.62%	▲2,762,430	0.00%	$5.14Mn
8	Morgan Stanley	0000895421	1,767,215	1.68%	▲467,440	+35.96%	$3.29Mn
9	SPHERA FUNDS MANAGEMENT LTD.	0001496201	1,757,458	1.67%	▲1,757,458	0.00%	$3.27Mn
10	Kynam Capital Management, LP	0001907884	1,566,317	1.49%	0	0.00%	$2.91Mn
11	DAFNA Capital Management LLC	0001389933	1,530,361	1.45%	▼37,200	-2.37%	$2.85Mn
12	Squadron Capital Management LLC	0002050709	1,511,496	1.43%	▲1,511,496	0.00%	$2.81Mn
13	683 Capital Management, LLC	0001404574	1,393,067	1.32%	▲1,393,067	0.00%	$2.59Mn
14	CITADEL ADVISORS LLC	0001423053	1,184,314	1.12%	▲480,991	+68.39%	$2.20Mn
15	PLATINUM INVESTMENT MANAGEMENT LTD	0001256071	1,159,428	1.10%	▼76,086	-6.16%	$2.16Mn
16	TWO SIGMA INVESTMENTS, LP	0001179392	1,138,715	1.08%	▲219,858	+23.93%	$2.12Mn
17	Eversept Partners, LP	0001697013	1,022,265	0.97%	▲1,022,265	0.00%	$1.90Mn
18	BOOTHBAY FUND MANAGEMENT, LLC	0001549230	948,736	0.90%	▲593,453	+167.04%	$1.76Mn
19	DIADEMA PARTNERS LP	0002026172	926,016	0.88%	▲745,933	+414.22%	$1.72Mn
20	UBS Group AG	0001610520	639,243	0.61%	▲333,979	+109.41%	$1.19Mn

Showing 1 to 20 of 69 holders