How many institutions held ACRS - Aclaris Therapeutics, Inc. - Common Stock, $0.00001 par value in Q1 2021?

95 institutional investors reported ACRS - Aclaris Therapeutics, Inc. - Common Stock, $0.00001 par value for Q1 2021. Use the holders table for investor-level position and value details.

Aclaris Therapeutics, Inc. - Common Stock, $0.00001 par value (ACRS)

Q: What does CUSIP 00461U105 represent in this 13F holders report?

CUSIP 00461U105 is the security identifier for ACRS - Aclaris Therapeutics, Inc. - Common Stock, $0.00001 par value used to aggregate holder disclosures.

CUSIP: 00461U105

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Common Stock, $0.00001 par value
Total 13F shares: 45,417,666
Total 13F value: $1,298,594,000
Share change: +13,508,576
Put/Call ratio: 64%
SEC-reported price per share: $25.20
Number of holders: 95
Value change: +$509,363,836
Number of buys: 64
Number of sells: 40
Shares outstanding: 138,752,791

Security key

00461U105

Report period

Q1 2021

Institutions

Top holders

ACRS full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 Aclaris Therapeutics, Inc. SEC filings Aclaris Therapeutics, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 00461U105

Newer quarter: Q2 2021 Previous quarter: Q4 2020

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of ACRS - Aclaris Therapeutics, Inc. - Common Stock, $0.00001 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

RENAISSANCE TECHNOLOGIES LLC

Disclosed value leader

RENAISSANCE TECHNOLOGIES LLC

Comparable rows

15/15

Latest evidence

31 Dec 2020

13F Lead comparable stake: 2.4% Showing 1-6 of 15 holder rows.

Quick read

RENAISSANCE TECHNOLOGIES LLC leads the comparable SEC ownership view at 2.4%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens RENAISSANCE TECHNOLOGIES LLC's linked filing trail.

Comparable ownership Top 5

RENAISSANCE TECHNOLOGIES LLC 2.4%

Rock Springs Capital Management LP 1.9%

ADAGE CAPITAL PARTNERS GP, L.L.C. 1.6%

Venrock Adviser, LLC 1.4%

Sofinnova Investments, Inc. 1.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
RENAISSANCE TECHNOLOGIES LLC	13F Company 13F	2.4%	$21,145,000 3,268,178 shares	—	31 Dec 2020
Rock Springs Capital Management LP	13F Company 13F	1.9%	$17,314,000 2,676,100 shares	—	31 Dec 2020
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F Company 13F	1.6%	$14,558,000 2,250,000 shares	—	31 Dec 2020
Venrock Adviser, LLC	13F Company 13F	1.4%	$12,648,000 1,954,932 shares	—	31 Dec 2020
Sofinnova Investments, Inc.	13F Company 13F	1.4%	$12,368,000 1,911,573 shares	—	31 Dec 2020
Parkman Healthcare Partners LLC	13F Company 13F	1.4%	$12,133,000 1,875,336 shares	—	31 Dec 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

45,417,666

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

Q1 2021 holders

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 value	Q1 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend