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 110 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	$21.80M 14,250,000 shares	17.65%	0(0.00%)Unchanged	SEC filing ↗ May 7, 2025	▾
02	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$14.73M 9,627,304 shares	0.03%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2025	▾
03	Vivo Capital, LLC CIK 1674712 · View history	$13.60M 8,888,888 shares	1.80%	0(0.00%)Unchanged	SEC filing ↗ May 12, 2025	▾
04	Rock Springs Capital Management LP CIK 1595725 · View history	$7.72M 5,046,309 shares	0.44%	-1.16M(-18.70%)Reduced	SEC filing ↗ May 15, 2025	▾
05	VANGUARD GROUP INC CIK 102909 · View history	$7.60M 4,970,254 shares	0.00%	+644.99K(+14.90%)Added	SEC filing ↗ May 9, 2025	▾
06	RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history	$7.14M 4,666,667 shares	0.12%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2025	▾
07	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$6.33M 4,134,148 shares	0.01%	+2.18M(+111.00%)Added	SEC filing ↗ May 15, 2025	▾
08	Decheng Capital LLC CIK 2010850 · View history	$6.18M 4,041,736 shares	1.73%	+1.78M(+78.30%)Added	SEC filing ↗ May 8, 2025	▾
09	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$4.51M 2,944,512 shares	0.01%	-349.11K(-10.60%)Reduced	SEC filing ↗ May 15, 2025	▾
10	MORGAN STANLEY CIK 895421 · View history	$3.70M 2,415,584 shares	0.00%	+1.34M(+125.40%)Added	SEC filing ↗ May 15, 2025	▾
11	MARSHALL WACE, LLP CIK 1318757 · View history	$3.54M 2,312,926 shares	0.00%	-321.14K(-12.20%)Reduced	SEC filing ↗ May 15, 2025	▾
12	Logos Global Management LP CIK 1792126 · View history	$3.40M 2,222,222 shares	0.60%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2025	▾
13	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$3.35M 2,195,191 shares	0.01%	+451.04K(+25.90%)Added	SEC filing ↗ May 21, 2025	▾
14	Stonepine Capital Management, LLC CIK 1440771 · View history	$2.77M 527,842 shares	2.18%	-135.56K(-20.40%)Reduced	SEC filing ↗ May 14, 2025	▾
15	Bollard Group LLC CIK 1556218 · View history	$2.18M 1,424,176 shares	0.06%	+1.42MNew	SEC filing ↗ May 15, 2025	▾
16	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$2.11M 1,381,741 shares	0.00%	+1.30M(+1,648.00%)Added	SEC filing ↗ May 14, 2025	▾
17	BlackRock, Inc. CIK 2012383 · View history	$2.08M 1,361,037 shares	0.00%	+103.26K(+8.20%)Added	SEC filing ↗ May 2, 2025	▾
18	Qube Research & Technologies Ltd CIK 1729829 · View history	$2.07M 1,350,820 shares	0.00%	+735.74K(+119.60%)Added	SEC filing ↗ May 15, 2025	▾
19	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.81M 1,182,737 shares	0.00%	+393.14K(+49.80%)Added	SEC filing ↗ May 13, 2025	▾
20	CITADEL ADVISORS LLC CIK 1423053 · View history	$1.72M 1,122,081 shares	0.00%	+1.07M(+1,927.40%)Added	SEC filing ↗ May 15, 2025	▾

Showing 20 / 110 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

110

Cancelled or null records excluded

Disclosed shares

92,706,924

Not deduplicated across managers

Disclosed value

$143.80M

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. · Q1 2025

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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.