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 103 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	$27.07M 14,250,000 shares	24.91%	0(0.00%)Unchanged	SEC filing ↗ Nov 10, 2025	▾
02	Vivo Capital, LLC CIK 1674712 · View history	$16.89M 8,888,888 shares	1.36%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$12.38M 6,515,458 shares	0.00%	-146.60K(-2.20%)Reduced	SEC filing ↗ Nov 7, 2025	▾
04	BlackRock, Inc. CIK 2012383 · View history	$10.81M 5,691,352 shares	0.00%	+176.47K(+3.20%)Added	SEC filing ↗ Nov 12, 2025	▾
05	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$10.03M 5,278,144 shares	0.02%	-4.35M(-45.20%)Reduced	SEC filing ↗ Nov 14, 2025	▾
06	Rock Springs Capital Management LP CIK 1595725 · View history	$8.76M 4,609,309 shares	0.51%	-160.00K(-3.40%)Reduced	SEC filing ↗ Nov 14, 2025	▾
07	MORGAN STANLEY CIK 895421 · Amended · View history	$7.75M 4,077,246 shares	0.00%	+537.05K(+15.20%)Added	SEC filing ↗ May 27, 2026	▾
08	Decheng Capital LLC CIK 2010850 · View history	$7.68M 4,041,736 shares	1.34%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2025	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$4.54M 2,389,531 shares	0.00%	-75.25K(-3.10%)Reduced	SEC filing ↗ Nov 12, 2025	▾
10	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$4.51M 2,373,226 shares	0.00%	-427.06K(-15.30%)Reduced	SEC filing ↗ Nov 14, 2025	▾
11	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$4.42M 2,327,019 shares	0.01%	-106.83K(-4.40%)Reduced	SEC filing ↗ Nov 13, 2025	▾
12	MARSHALL WACE, LLP CIK 1318757 · View history	$3.26M 1,718,130 shares	0.00%	-574.32K(-25.10%)Reduced	SEC filing ↗ Nov 13, 2025	▾
13	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.08M 1,619,731 shares	0.00%	+154.95K(+10.60%)Added	SEC filing ↗ Nov 13, 2025	▾
14	Palo Alto Investors LP CIK 1306923 · View history	$2.98M 1,566,840 shares	0.55%	+176.81K(+12.70%)Added	SEC filing ↗ Nov 14, 2025	▾
15	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$2.95M 1,554,458 shares	0.00%	-2.28M(-59.50%)Reduced	SEC filing ↗ Nov 14, 2025	▾
16	Logos Global Management LP CIK 1792126 · View history	$2.85M 1,500,000 shares	0.28%	-350.00K(-18.90%)Reduced	SEC filing ↗ Nov 14, 2025	▾
17	CITADEL ADVISORS LLC CIK 1423053 · View history	$2.72M 1,432,677 shares	0.00%	+288.87K(+25.30%)Added	SEC filing ↗ Nov 14, 2025	▾
18	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$2.43M 1,277,817 shares	0.00%	+1.28MNew	SEC filing ↗ Nov 14, 2025	▾
19	Bollard Group LLC CIK 1556218 · View history	$2.33M 1,225,476 shares	0.06%	-126.80K(-9.40%)Reduced	SEC filing ↗ Nov 14, 2025	▾
20	STATE STREET CORP CIK 93751 · View history	$2.11M 1,113,146 shares	0.00%	+106.25K(+10.60%)Added	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 103 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

103

Cancelled or null records excluded

Disclosed shares

85,675,311

Not deduplicated across managers

Disclosed value

$162.78M

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. · Q3 2025

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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.