PRQR · ProQR Therapeutics N.V. · Holdings

$1.31 -0.02 (-1.50%)

Market Cap

$187.69M

141.12M

Volume · Oct 23 26.1K Avg daily vol (3M) 799.65K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of PRQR: 13F, 13D and 13G, insiders and funds →

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 70

Total Value: $112,939,514

Total Shares: 60,740,601

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 70 13F filers

Top Holder

14.8%

of institutional value

Top 5

53.4%

of institutional value

Top 10

71.7%

of institutional value

HHI

751

Broadly held

Who Holds PRQR

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 70 filers, like-for-like change +73.1%; actively managed books +66.1%; index-like books +115.0%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	57.3%	35	+92.5%	6	3
Exempt adviser	4.3%	3	+227.8%	1	2
Adviser	1.0%	1	-76.3%	0	2
Bank	1.2%	6	-10.2%	0	1
Non-US	0.6%	3	+36.7%	0	0
Holding company	17.6%	3	+131.6%	0	0
Broker-dealer	0.0%	0	-100.0%	0	1
Insurer	0.0%	0	—	0	0
Unknown	18.0%	19	+38.5%	5	2

Style	Share	Filers	Change	New	Exited
Index-like	17.8%	5	+115.0%	0	1
Systematic-like	11.5%	9	+114.7%	2	3
Concentrated	19.0%	16	+32.6%	4	1
Diversified active	51.8%	40	+73.5%	6	6
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	22.6%	28	+69.6%	1	2
Medium turnover	47.8%	14	+60.3%	3	1
High turnover	25.9%	21	+91.9%	6	8
Unknown	3.7%	7	+228.2%	2	0
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	11.6%	16	+127.5%	6	3
Medium horizon	26.2%	13	+51.0%	1	0
Long horizon	46.3%	31	+51.5%	0	4
Unknown	15.9%	10	+234.3%	5	4
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	34.6%	24	+57.1%	6	2
$1B to $10B	18.3%	17	+125.2%	5	3
$10B to $100B	36.5%	14	+88.7%	1	2
$100B or more	10.6%	15	+27.9%	0	4
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	0.6%	9	+38.4%	0	0
Pooled investment vehicles	53.9%	22	+85.9%	5	3
Registered funds and BDCs	0.1%	1	-31.7%	0	0
Pension and profit sharing plans	0.1%	1	0.0%	0	0
Other investment advisers	0.0%	1	+13.8%	0	0
Diversified	0.0%	0	—	0	0
Unknown	45.2%	36	+61.4%	7	8

Private funds	Share	Filers	Change	New	Exited
Hedge funds	59.6%	24	+103.9%	7	5
Private equity funds	0.1%	2	0.0%	0	0
Venture capital funds	1.0%	1	0.0%	0	0
Other private funds	0.3%	2	0.0%	0	0
Mixed private funds	0.0%	0	—	0	0
No private funds	0.6%	9	+30.1%	0	0
Unknown	38.4%	32	+43.9%	5	6

Location	Share	Filers	Change	New	Exited
United States	68.9%	55	+75.8%	11	8
Outside the US	31.1%	15	+67.5%	1	3

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

70 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

1.43% of filers hold it in their top 10

Mar 31, 2026: 1

Holders above 5%

median weight 0.002%

Mar 31, 2026: 0

Crowding

—

a foreign private issuer reports ordinary shares, a different unit from the listed shares

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

a foreign private issuer reports ordinary shares, a different unit from the listed shares

Top 10 holders

71.7%

of 13F shares, Herfindahl 0.075

Active holders

+66.1%

like-for-like share change of active filers

5% stakes on record

1 13D, 4 13G (2 institutional, 2 passive, 0 exempt)

How long holders have held it value-weighted 10.9 quarters

Under 1 year 22.9% 1 to 3 years 40.5% 3 years or more 36.7% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $1,228,142 (1 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$1.99

estimated per share

Mar 31, 2026: $2.62

Quarter-end price

$1.86

implied by 13F values

Estimated gain or loss

-6.5%

price against the estimated cost

Estimated at a loss

36.4%

of costed 13F value

Estimated cost covers 69.2% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies PRQR's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	NXTC NextCure, Inc.	4	0.375
2	TRAW Traws Pharma, Inc.	4	0.375
3	EQ Equillium, Inc.	5	0.346
4	TRAX First Tracks Biotherapeutics, Inc.	6	0.324
5	ALEC Alector, Inc.	6	0.324
6	CUE Cue Biopharma, Inc.	4	0.324
7	CCCC C4 Therapeutics, Inc.	6	0.308
8	VRCA Verrica Pharmaceuticals Inc.	3	0.308
9	CALC CalciMedica, Inc.	3	0.308
10	SPRB Spruce Biosciences, Inc.	5	0.307

Shareholder Targets

13F filers that own its peers but not PRQR, quarter ended Jun 30, 2026

Found through its holder-overlap peers: NXTC, TRAW, EQ, TRAX, ALEC, CUE, CCCC, VRCA, CALC, SPRB, SCYX, PMN, LXEO, EPRX, VRDN, CLDX, PLRX, WVE, OVID, RNAC. 531 filers in all.

#	Filer	In peers	Of book	Largest peers
1	FMR LLC Holding company, Diversified active	$525,088,346 12 held	0.020%	VRDN, CLDX, TRAX
2	WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active	$427,650,320 8 held	0.070%	CLDX, VRDN, PMN
3	STATE STREET CORP Bank, Index-like	$378,281,332 17 held	0.010%	CLDX, VRDN, TRAX
4	VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like	$345,997,400 18 held	0.010%	CLDX, VRDN, TRAX
5	PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active	$292,954,358 9 held	0.030%	CLDX, VRDN, WVE
6	RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated	$255,518,562 5 held	2.25%	WVE, CCCC, OVID
7	Deep Track Capital, LP Adviser, Diversified active	$186,361,660 3 held	2.84%	CLDX, VRDN, PMN
8	Bellevue Group AG Non-US, Diversified active	$168,317,167 2 held	3.64%	VRDN, CLDX
9	Jupiter Topco LLC Unknown, Diversified active	$144,888,957 10 held	0.060%	OVID, TRAX, EQ
10	Paradigm Biocapital Advisors LP Registered adviser, Concentrated	$142,952,388 2 held	3.10%	VRDN, LXEO

Fund Ownership of PRQR by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.03% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.00%	0.00 pp	397	1
Index ETFs	0.03%	+0.01 pp	48,328	1
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.02%	+0.01 pp	22,141	1
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.05%	+0.03 pp	70,866	3

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 35 Exempt adviser 3 Adviser 1 Bank 6 Non-US 3 Holding company 3 Unknown 19

Showing 70 of 70

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

ADAGE CAPITAL PARTNERS GP, L.L.C.

$16,769,568

14.85%

9,015,897

Aberdeen Group plc

$16,614,463

14.71%

8,932,507

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
abrdn Inc.	8,932,507	$16,614,463	100.0%	Defined

Affinity Asset Advisors, LLC

$10,311,720

9.13%

5,543,936

Privium Fund Management B.V.

$10,267,244

9.09%

5,520,024

Ikarian Capital, LLC

$6,372,229

5.64%

3,425,930

Woodline Partners LP

$6,095,485

5.40%

3,277,143

HEIGHTS CAPITAL MANAGEMENT, INC

$5,138,119

4.55%

2,762,430

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CVI Investments, Inc.	2,762,430	$5,138,119	100.0%	Other

MORGAN STANLEY

$3,287,019

2.91%

1,767,215

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	33,019	$61,415	1.9%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	1,703,996	$3,169,432	96.4%	Defined
MORGAN STANLEY SMITH BARNEY LLC	30,200	$56,172	1.7%	Defined

SPHERA FUNDS MANAGEMENT LTD.

$3,268,871

2.89%

1,757,458

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Sphera Global Healthcare Management LP joint	1,757,458	$3,268,871	100.0%	Defined

Kynam Capital Management, LP

$2,913,349

2.58%

1,566,317

DAFNA Capital Management LLC

$2,846,471

2.52%

1,530,361

Squadron Capital Management LLC

$2,811,382

2.49%

1,511,496

683 Capital Management, LLC

$2,591,104

2.29%

1,393,067

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
683 Capital Partners, LP	1,393,067	$2,591,104	100.0%	Defined

CITADEL ADVISORS LLC

$2,202,823

1.95%

1,184,314

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	34,943	$64,993	3.0%	Defined
Held directly	1,149,371	$2,137,830	97.0%	Defined

PLATINUM INVESTMENT MANAGEMENT LTD

$2,156,536

1.91%

1,159,428

TWO SIGMA INVESTMENTS, LP

$2,118,009

1.88%

1,138,715

Eversept Partners, LP

$1,901,412

1.68%

1,022,265

BOOTHBAY FUND MANAGEMENT, LLC

$1,764,648

1.56%

948,736

DIADEMA PARTNERS LP

$1,722,389

1.53%

926,016

UBS Group AG

$1,188,991

1.05%

639,243

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	639,243	$1,188,991	100.0%	Defined

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$1,153,200

1.02%

620,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	620,000	$1,153,200	100.0%	Defined

M28 Capital Management LP

$1,115,614

0.99%

599,793

RAYMOND JAMES FINANCIAL INC

$1,062,194

0.94%

571,073

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	190,887	$355,049	33.4%	Defined
Raymond James Financial Services Advisors, Inc.	380,186	$707,145	66.6%	Defined

Lynx1 Capital Management LP

$969,828

0.86%

521,413

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Lynx1 Capital Advisors LLC	521,413	$969,828	100.0%	Other

JANE STREET GROUP, LLC

$846,493

0.75%

455,104

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	295,290	$549,239	64.9%	Defined
Jane Street Global Trading, LLC	159,814	$297,254	35.1%	Defined

STEMPOINT CAPITAL LP

$801,760

0.71%

431,054

BNP PARIBAS ARBITRAGE, SA

$512,673

0.45%

275,631

Monaco Asset Management SAM

$454,745

0.40%

244,487

Persistent Asset Partners Ltd

$439,804

0.39%

236,454

Palo Alto Investors LP

$351,181

0.31%

188,807

Burkehill Global Management, LP

$327,811

0.29%

176,243

GSA CAPITAL PARTNERS LLP

$323,349

0.29%

173,844

MILLENNIUM MANAGEMENT LLC

$299,467

0.27%

161,004

FRANKLIN STREET ADVISORS INC /NC

$249,000

0.22%

150,000

DEUTSCHE BANK AG\

$202,297

0.18%

108,762

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	108,762	$202,297	100.0%	Defined

OneDigital Investment Advisors LLC

$158,100

0.14%

85,000

Quadrature Capital Ltd

$157,739

0.14%

84,806

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	84,806	$157,739	100.0%	Other

RFG Advisory, LLC

$119,040

0.11%

64,000

BANK OF AMERICA CORP /DE/

$107,954

0.10%

58,040

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	58,040	$107,954	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$107,874

0.10%

57,997

Point72 Asset Management, L.P.

$94,212

0.08%

50,652

Keating Financial Advisory Services, Inc.

$88,446

0.08%

47,552

Velan Capital Investment Management LP

$83,700

0.07%

45,000

GUGGENHEIM CAPITAL LLC

$74,314

0.07%

39,954

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GUGGENHEIM FUNDS DISTRIBUTORS, LLC	39,954	$74,314	100.0%	Defined

Steward Partners Investment Advisory, LLC

$65,548

0.06%

35,241

Axiom Investment Management LLC

$57,660

0.05%

31,000

MOODY LYNN LIEBERSON & WALKER, LLC

$41,500

0.04%

25,000

Vanguard Personalized Indexing Management, LLC

$41,096

0.04%

22,095

Mariner, LLC

$37,514

0.03%

20,169

Verdad Advisers, LP

$35,526

0.03%

19,100

NANO CAP NEW MILLENNIUM GROWTH FUND L P

$32,550

0.03%

17,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AZG TANGIBLE ASSETS FUND LLC	17,500	$32,550	100.0%	Sole

TWO SIGMA SECURITIES, LLC

$29,789

0.03%

16,016

Atom Investors LP

$24,379

0.02%

13,107

China Universal Asset Management Co., Ltd.

$23,250

0.02%

12,500

Virtu Financial LLC

$21,624

0.02%

11,626

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	11,626	$21,624	100.0%	Defined

TRUIST FINANCIAL CORP

$18,600

0.02%

10,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Truist Advisory Services, Inc.	10,000	$18,600	100.0%	Defined

ADAR1 Capital Management, LLC

$18,600

0.02%

10,000

WETZEL INVESTMENT ADVISORS, INC.

$17,430

0.02%

10,500

WELLS FARGO & COMPANY/MN

$7,440

0.01%

4,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	4,000	$7,440	100.0%	Defined

BlackRock, Inc.

$7,337

0.01%

3,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	3,945	$7,337	100.0%	Sole

ROYAL BANK OF CANADA

$6,147

0.01%

3,305

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	3,000	$5,580	90.8%	Defined
RBC Dominion Securities Inc.	200	$372	6.1%	Defined
Held directly	105	$195	3.2%	Sole

Farther Finance Advisors, LLC

$4,651

0.00%

2,802

Hilton Head Capital Partners, LLC

$2,611

0.00%

1,404

PFS Partners, LLC

$1,660

0.00%

1,000

SBI Securities Co., Ltd.

$854

0.00%

515

JPMORGAN CHASE & CO

$526

0.00%

283

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Securities plc	283	$526	100.0%	Defined

SIMPLEX TRADING, LLC

$504

0.00%

271

TD Waterhouse Canada Inc.

$66

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TORONTO DOMINION BANK	40	$66	100.0%	Defined

Medallion Wealth Advisors, LLC

$18

0.00%

Caitong International Asset Management Co., Ltd

0.00%

Key facts CIK 1612940 CUSIP N71542109 13F (30d) 7 filings 7 filers Visit website Investor relations