Company · Ownership research

Aclaris Therapeutics, Inc. ACRS

CIK 0001557746 · CUSIP 00461U105

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 00461U105 (ACRS), not CUSIP 00461U905 (ACRS), CUSIP 00461U955 (ACRS), and does not merge CUSIPs.

This page lists the top 20 of 99 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	BML Capital Management, LLC CIK 1616824 · View history	$35.34M 14,250,000 shares	21.95%	0(0.00%)Unchanged	SEC filing ↗ Feb 7, 2025	▾
02	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$23.88M 9,627,304 shares	0.04%	+9.63MNew	SEC filing ↗ Feb 14, 2025	▾
03	Vivo Capital, LLC CIK 1674712 · View history	$22.04M 8,888,888 shares	2.47%	+8.89MNew	SEC filing ↗ Feb 13, 2025	▾
04	Rock Springs Capital Management LP CIK 1595725 · View history	$15.39M 6,204,309 shares	0.59%	+3.45M(+125.30%)Added	SEC filing ↗ Feb 14, 2025	▾
05	RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history	$11.57M 4,666,667 shares	0.15%	+4.67MNew	SEC filing ↗ Feb 14, 2025	▾
06	VANGUARD GROUP INC CIK 102909 · View history	$10.73M 4,325,263 shares	0.00%	-360.24K(-7.70%)Reduced	SEC filing ↗ Feb 11, 2025	▾
07	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$8.17M 3,293,625 shares	0.01%	-78.22K(-2.30%)Reduced	SEC filing ↗ Feb 14, 2025	▾
08	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$6.99M 2,799,759 shares	0.00%	+2.80MNew	SEC filing ↗ Feb 14, 2025	▾
09	MARSHALL WACE, LLP CIK 1318757 · View history	$6.53M 2,634,065 shares	0.01%	+2.63MNew	SEC filing ↗ Feb 13, 2025	▾
10	Samsara BioCapital, LLC CIK 1744967 · View history	$5.91M 2,385,060 shares	0.81%	+1.69M(+242.60%)Added	SEC filing ↗ Feb 14, 2025	▾
11	Decheng Capital LLC CIK 2010850 · View history	$5.62M 2,266,667 shares	1.21%	+2.27MNew	SEC filing ↗ Feb 14, 2025	▾
12	Logos Global Management LP CIK 1792126 · View history	$5.51M 2,222,222 shares	0.64%	+2.22MNew	SEC filing ↗ Feb 14, 2025	▾
13	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$4.86M 1,959,047 shares	0.00%	-1.05M(-34.80%)Reduced	SEC filing ↗ Feb 14, 2025	▾
14	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$4.32M 1,744,147 shares	0.01%	-334.14K(-16.10%)Reduced	SEC filing ↗ Feb 11, 2025	▾
15	BlackRock, Inc. CIK 2012383 · View history	$3.12M 1,257,779 shares	0.00%	-454.02K(-26.50%)Reduced	SEC filing ↗ Feb 7, 2025	▾
16	MORGAN STANLEY CIK 895421 · Amended · View history	$2.66M 1,071,784 shares	0.00%	+591.01K(+122.90%)Added	SEC filing ↗ May 15, 2025	▾
17	Aldebaran Capital, LLC CIK 1448430 · View history	$2.52M 1,016,958 shares	2.40%	-26.19K(-2.50%)Reduced	SEC filing ↗ Feb 12, 2025	▾
18	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$2.42M 977,400 shares	0.01%	-324.10K(-24.90%)Reduced	SEC filing ↗ Feb 14, 2025	▾
19	DEUTSCHE BANK AG\ CIK 948046 · Amended · View history	$2.29M 923,313 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Jun 30, 2025	▾
20	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$2.25M 908,819 shares	0.01%	+576.41K(+173.40%)Added	SEC filing ↗ Feb 10, 2025	▾

Showing 20 / 99 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

87,493,319

Not deduplicated across managers

Disclosed value

$217.02M

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.

Aclaris Therapeutics, Inc. · Q4 2024

Explore all 99 reporting institutions.

This page includes 20 of 99 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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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.