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 82 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	$16.39M 14,250,000 shares	9.64%	+1.26M(+9.70%)Added	SEC filing ↗ Nov 5, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$5.39M 4,685,498 shares	0.00%	-2.05K(0.00%)Reduced	SEC filing ↗ Nov 13, 2024	▾
03	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$3.88M 3,371,849 shares	0.01%	+51.64K(+1.60%)Added	SEC filing ↗ Nov 14, 2024	▾
04	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$3.46M 3,005,598 shares	0.00%	-331.25K(-9.90%)Reduced	SEC filing ↗ Nov 14, 2024	▾
05	Rock Springs Capital Management LP CIK 1595725 · View history	$3.17M 2,753,495 shares	0.10%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
06	Stonepine Capital Management, LLC CIK 1440771 · View history	$2.83M 2,458,873 shares	1.79%	+531.43K(+27.60%)Added	SEC filing ↗ Nov 13, 2024	▾
07	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$2.39M 2,078,287 shares	0.01%	+164.84K(+8.60%)Added	SEC filing ↗ Nov 12, 2024	▾
08	Trium Capital LLP CIK 1963860 · View history	$2.20M 1,912,990 shares	1.01%	+20.94K(+1.10%)Added	SEC filing ↗ Oct 7, 2024	▾
09	BlackRock, Inc. CIK 2012383 · View history	$1.97M 1,711,797 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
10	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$1.58M 1,370,700 shares	0.00%	+448.50K(+48.60%)Added	SEC filing ↗ Nov 13, 2024	▾
11	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$1.50M 1,301,500 shares	0.00%	-135.40K(-9.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
12	Aldebaran Capital, LLC CIK 1448430 · View history	$1.20M 1,043,152 shares	1.10%	+185.00K(+21.60%)Added	SEC filing ↗ Nov 13, 2024	▾
13	DEUTSCHE BANK AG\ CIK 948046 · Amended · View history	$1.06M 923,313 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Jun 26, 2025	▾
14	JACOBS LEVY EQUITY MANAGEMENT, INC CIK 884414 · View history	$1.05M 915,509 shares	0.00%	+915.51KNew	SEC filing ↗ Nov 14, 2024	▾
15	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$1.04M 907,916 shares	0.00%	-205.16K(-18.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
16	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$973.58K 846,446 shares	0.00%	+72.31K(+9.30%)Added	SEC filing ↗ Nov 12, 2024	▾
17	Samsara BioCapital, LLC CIK 1744967 · View history	$800.60K 696,171 shares	0.15%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
18	Acuitas Investments, LLC CIK 1524828 · View history	$664.86K 578,139 shares	0.30%	+114.02K(+24.60%)Added	SEC filing ↗ Nov 7, 2024	▾
19	Palo Alto Investors LP CIK 1306923 · View history	$655.31K 569,832 shares	0.09%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
20	FMR LLC CIK 315066 · View history	$627.87K 545,972 shares	0.00%	-143.38K(-20.80%)Reduced	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 82 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

50,906,169

Not deduplicated across managers

Disclosed value

$58.54M

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 2024

Explore all 82 reporting institutions.

This page includes 20 of 82 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.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 82 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"00461U105","quarter":"2024Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

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.