Company · Ownership research

ProQR Therapeutics N.V. PRQR

CIK 0001612940 · CUSIP N71542109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP N71542109 (PRQR), not CUSIP N71542909 (PRQR), CUSIP N71542959 (PRQR), and does not merge CUSIPs.

This page lists the top 20 of 49 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Privium Fund Management B.V. CIK 1795097 · View history	$9.21M 5,580,725 shares	2.35%	+236.28K(+4.40%)Added	SEC filing ↗ Aug 1, 2024	▾
02	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$6.02M 3,625,467 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
03	EcoR1 Capital, LLC CIK 1587114 · View history	$3.39M 2,042,771 shares	0.10%	-841.59K(-29.20%)Reduced	SEC filing ↗ Aug 14, 2024	▾
04	M28 Capital Management LP CIK 1807489 · View history	$1.69M 1,019,498 shares	2.19%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2024	▾
05	DAFNA Capital Management LLC CIK 1389933 · View history	$1.50M 905,582 shares	0.36%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
06	Ghost Tree Capital, LLC CIK 1595851 · View history	$1.49M 900,000 shares	0.52%	+900.00KNew	SEC filing ↗ Aug 14, 2024	▾
07	MACQUARIE GROUP LTD CIK 1418333 · View history	$1.03M 620,000 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 9, 2024	▾
08	Ikarian Capital, LLC CIK 1778253 · View history	$802.75K 483,583 shares	0.25%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
09	DEUTSCHE BANK AG\ CIK 948046 · Amended · View history	$639.35K 385,149 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Jun 12, 2025	▾
10	Monaco Asset Management SAM CIK 1803593 · View history	$518.96K 312,629 shares	0.26%	0(0.00%)Unchanged	SEC filing ↗ Aug 7, 2024	▾
11	FRANKLIN STREET ADVISORS INC /NC CIK 1010873 · View history	$249.00K 150,000 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ Jul 18, 2024	▾
12	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$246.27K 148,357 shares	0.00%	-180.63K(-54.90%)Reduced	SEC filing ↗ Aug 14, 2024	▾
13	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$218.29K 131,500 shares	0.00%	-30.50K(-18.80%)Reduced	SEC filing ↗ Aug 14, 2024	▾
14	BOOTHBAY FUND MANAGEMENT, LLC CIK 1549230 · View history	$177.13K 106,703 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾
15	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$159.56K 96,118 shares	0.00%	-44.03K(-31.40%)Reduced	SEC filing ↗ Aug 15, 2024	▾
16	Squarepoint Ops LLC CIK 1642575 · View history	$140.66K 84,733 shares	0.00%	-67.77K(-44.40%)Reduced	SEC filing ↗ Aug 14, 2024	▾
17	MORGAN STANLEY CIK 895421 · Amended · View history	$129.38K 77,942 shares	0.00%	+10.35K(+15.30%)Added	SEC filing ↗ May 14, 2025	▾
18	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$121.45K 73,163 shares	0.00%	-36.94K(-33.60%)Reduced	SEC filing ↗ Aug 14, 2024	▾
19	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$114.45K 68,945 shares	0.00%	-10.00K(-12.70%)Reduced	SEC filing ↗ Aug 14, 2024	▾
20	Schonfeld Strategic Advisors LLC CIK 1665241 · View history	$102.75K 61,900 shares	0.00%	+61.90KNew	SEC filing ↗ Aug 14, 2024	▾

Showing 20 / 49 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

17,290,962

Not deduplicated across managers

Disclosed value

$28.65M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ProQR Therapeutics N.V. · Q2 2024

Explore all 49 reporting institutions.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.