ACRS · Aclaris Therapeutics, Inc.

$6.18 +0.16 (+2.66%) At close · Sep 2

Russell 2000 member Rebalance outlook locked

Market Cap

$910.43M

147.20M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 150

Total Value: $634,279,598

Total Shares: 119,901,645

Showing 1–100 of 155 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 150 13F filers · Δ vs Mar 31, 2026

Top Holder

10.6%

−2.4 pts

Top 5

42.3%

+1.8 pts

Top 10

61.7%

+0.6 pts

HHI

498

Broadly held−2

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +13

Institutional value: +54.3%

Shares held: +9.4%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large RA CAPITAL MANAGEMENT, L.P.	+5,918,954	12,723,026
Mega BlackRock, Inc.	+2,629,943	10,037,008
Mega STATE STREET CORP	+1,246,594	3,255,340
Large PANAGORA ASSET MANAGEMENT INC	+853,862	1,356,152
Mega GEODE CAPITAL MANAGEMENT, LLC	+766,367	3,190,058

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega MORGAN STANLEY	−2,612,185	134,117
Small BML Capital Management, LLC	−2,275,000	11,975,000
Large Balyasny Asset Management L.P.	−1,337,858	2,023,470
Mega D. E. Shaw & Co., Inc.	−486,305	414,499
Mega CITADEL ADVISORS LLC	−430,938	2,387,081

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Small SILVERARC CAPITAL MANAGEMENT, LLC	1,946,482	$10,296,889
Small Jones Hill Capital LP	1,759,492	$9,307,712
Mid ORBIMED ADVISORS LLC	421,500	$2,229,735
Small Tetragon Partners GP Ltd	400,000	$2,116,000
Mid Atom Investors LP	148,855	$787,442

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large MARSHALL WACE, LLP	712,984	$2,673,690
Micro Monashee Investment Management LLC	500,000	$1,875,000
Large MACKENZIE FINANCIAL CORP	213,405	$800,268
Mega Qube Research & Technologies Ltd	194,510	$729,412
Mid ADAR1 Capital Management, LLC	132,426	$496,597

Filter: New 28 Increased 65 Reduced 34 Sold out 15 Unchanged 23

Showing 100 of 155

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

RA CAPITAL MANAGEMENT, L.P.

$67,304,807

10.61%

12,723,026

BML Capital Management, LLC

$63,347,750

9.99%

11,975,000

BlackRock, Inc.

$53,095,768

8.37%

10,037,008

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	90,503	$478,760	0.9%	Sole
BlackRock Investment Management, LLC	371,594	$1,965,732	3.7%	Sole
BLACKROCK ADVISORS LLC	271,611	$1,436,822	2.7%	Sole
BlackRock Fund Advisors	5,725,873	$30,289,868	57.0%	Sole
BlackRock Institutional Trust Company, N.A.	3,079,829	$16,292,295	30.7%	Sole
BlackRock Japan Co. Ltd	99,295	$525,270	1.0%	Sole
BlackRock (Netherlands) B.V.	4,071	$21,535	0.0%	Sole
BlackRock Asset Management Ireland Ltd	105,184	$556,423	1.0%	Sole
Aperio Group, LLC	289,048	$1,529,063	2.9%	Sole

Deep Track Capital, LP

$49,435,050

7.79%

9,345,000

Vivo Capital, LLC

$35,414,629

5.58%

6,694,637

VANGUARD CAPITAL MANAGEMENT LLC

$30,776,511

4.85%

5,817,866

Frazier Life Sciences Management, L.P.

$26,055,228

4.11%

4,925,374

Rock Springs Capital Management LP

$22,908,514

3.61%

4,330,532

ADAGE CAPITAL PARTNERS GP, L.L.C.

$21,535,590

3.40%

4,071,000

Decheng Capital LLC

$21,380,783

3.37%

4,041,736

STATE STREET CORP

$17,220,748

2.72%

3,255,340

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	3,255,340	$17,220,748	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$16,875,405

2.66%

3,190,058

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	466,817	$2,469,461	14.6%	Defined
Held directly	2,723,241	$14,405,944	85.4%	Defined

BRAIDWELL LP

$11,333,020

1.79%

2,142,348

Balyasny Asset Management L.P.

$10,704,156

1.69%

2,023,470

SILVERARC CAPITAL MANAGEMENT, LLC

$10,296,889

1.62%

1,946,482

Kalehua Capital Management LLC

$9,693,210

1.53%

1,832,365

CITADEL ADVISORS LLC

$9,321,408

1.47%

1,762,081

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	1,573,598	$8,324,333	89.3%	Defined
Held directly	188,483	$997,075	10.7%	Defined

Jones Hill Capital LP

$9,307,712

1.47%

1,759,492

ACADIAN ASSET MANAGEMENT LLC

$8,683,386

1.37%

1,641,472

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,641,472	$8,683,386	100.0%	Defined

Palo Alto Investors LP

$8,535,044

1.35%

1,613,430

Woodline Partners LP

$8,522,475

1.34%

1,611,054

VANGUARD PORTFOLIO MANAGEMENT LLC

$7,753,738

1.22%

1,465,735

PANAGORA ASSET MANAGEMENT INC

$7,174,044

1.13%

1,356,152

Connor, Clark & Lunn Investment Management Ltd.

$6,400,296

1.01%

1,209,886

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	1,209,886	$6,400,296	100.0%	Sole

MPM BIOIMPACT LLC

$5,514,650

0.87%

1,042,467

DEUTSCHE BANK AG\

$5,506,651

0.87%

1,040,955

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	1,938	$10,252	0.2%	Defined
DWS Investments UK Ltd	1,039,017	$5,496,399	99.8%	Defined

NORTHERN TRUST CORP

$5,283,454

0.83%

998,763

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	960,613	$5,081,642	96.2%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	19,537	$103,350	2.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	18,613	$98,462	1.9%	Other

Aldebaran Capital, LLC

$4,955,306

0.78%

936,731

VANGUARD FIDUCIARY TRUST CO

$4,798,945

0.76%

907,173

RENAISSANCE TECHNOLOGIES LLC

$4,324,738

0.68%

817,531

Three Bridge Wealth Advisors, LLC

$3,781,413

0.60%

714,823

GOLDMAN SACHS GROUP INC

$3,222,444

0.51%

609,158

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	292,316	$1,546,351	48.0%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	302,678	$1,601,166	49.7%	Defined
Goldman Sachs Trust Company, N.A.	14,164	$74,927	2.3%	Defined

MILLENNIUM MANAGEMENT LLC

$2,771,404

0.44%

523,895

CITADEL ADVISORS LLC

$2,756,090

0.43%

521,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	521,000	$2,756,090	100.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$2,718,211

0.43%

513,840

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	13,878	$73,414	2.7%	Defined
DFA Australia Ltd.	7,560	$39,992	1.5%	Defined
Dimensional Ireland Ltd	64,599	$341,728	12.6%	Defined
Held directly	427,803	$2,263,077	83.3%	Sole

JPMORGAN CHASE & CO

$2,480,818

0.39%

468,964

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	68,082	$360,153	14.5%	Defined
J.P. Morgan Investment Management Inc.	392,999	$2,078,964	83.8%	Defined
J.P. Morgan Securities plc	7,883	$41,701	1.7%	Defined

Aisling Capital Management LP

$2,298,266

0.36%

434,455

Bollard Group LLC

$2,283,327

0.36%

431,631

ORBIMED ADVISORS LLC

$2,229,735

0.35%

421,500

D. E. Shaw & Co., Inc.

$2,192,699

0.35%

414,499

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	414,499	$2,192,699	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$2,182,384

0.34%

412,549

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	412,549	$2,182,384	100.0%	Other

Tetragon Partners GP Ltd

$2,116,000

0.33%

400,000

Russell Investments Group, Ltd.

$1,931,138

0.30%

365,055

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	195,318	$1,033,231	53.5%	Defined
Russell Investments Capital, LLC	63,950	$338,295	17.5%	Defined
Russell Investments France SAS	41,924	$221,777	11.5%	Defined
Russell Investments Trust Company	63,863	$337,835	17.5%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$1,830,646

0.29%

346,058

FMR LLC

$1,660,264

0.26%

313,850

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	290,103	$1,534,644	92.4%	Defined
STRATEGIC ADVISERS LLC	31	$163	0.0%	Defined
FIAM LLC	23,716	$125,457	7.6%	Defined

Bank of New York Mellon Corp

$1,494,947

0.24%

282,599

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	81,444	$430,838	28.8%	Defined
The Bank of New York Mellon	201,154	$1,064,104	71.2%	Defined
Held directly	1	$5	0.0%	Defined

Nuveen, LLC

$1,472,756

0.23%

278,404

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	26,371	$139,502	9.5%	Defined
TEACHERS ADVISORS, LLC joint	252,033	$1,333,254	90.5%	Defined

RAYMOND JAMES FINANCIAL INC

$1,457,981

0.23%

275,611

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	6,643	$35,141	2.4%	Defined
Raymond James Financial Services Advisors, Inc.	7,800	$41,262	2.8%	Defined
ClariVest Asset Management LLC joint	261,168	$1,381,578	94.8%	Defined

WELLINGTON MANAGEMENT GROUP LLP

$1,415,063

0.22%

267,498

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	84,736	$448,253	31.7%	Defined
Wellington Trust Company, NA joint	171,628	$907,912	64.2%	Defined
Wellington Management Australia Pty Ltd	11,134	$58,898	4.2%	Defined

SUPERSTRING CAPITAL MANAGEMENT LP

$1,363,100

0.21%

257,675

UBS Group AG

$1,359,533

0.21%

257,001

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	702	$3,713	0.3%	Defined
UBS AG	236,724	$1,252,269	92.1%	Defined
UBS Switzerland AG	19,575	$103,551	7.6%	Defined

Invesco Ltd.

$1,285,616

0.20%

243,028

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	16,758	$88,649	6.9%	Defined
Invesco Trust Co joint	46,674	$246,905	19.2%	Defined
Invesco Capital Management LLC	179,596	$950,062	73.9%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$1,172,258

0.18%

221,599

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	221,599	$1,172,258	100.0%	Defined

HighTower Advisors, LLC

$1,150,701

0.18%

217,524

Creative Planning

$1,093,162

0.17%

206,647

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	2,738	$14,484	1.3%	Defined
Held directly	203,909	$1,078,678	98.7%	Sole

Logos Global Management LP

$1,058,000

0.17%

200,000

Verdad Advisers, LP

$927,188

0.15%

175,272

Informed Momentum Co LLC

$906,319

0.14%

171,327

Assenagon Asset Management S.A.

$817,590

0.13%

154,554

Atom Investors LP

$787,442

0.12%

148,855

RHUMBLINE ADVISERS

$757,612

0.12%

143,216

ALPS ADVISORS INC

$749,852

0.12%

141,749

SEI INVESTMENTS CO

$734,135

0.12%

138,778

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	138,778	$734,135	100.0%	Sole

MORGAN STANLEY

$709,477

0.11%

134,117

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	1,836	$9,712	1.4%	Defined
MORGAN STANLEY & CO. LLC	39,473	$208,812	29.4%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	41,446	$219,249	30.9%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,481	$7,834	1.1%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	49,881	$263,870	37.2%	Defined

TWO SIGMA INVESTMENTS, LP

$703,929

0.11%

133,068

Vanguard Global Advisers, LLC

$682,706

0.11%

129,056

Hudson Bay Capital Management LP

$634,800

0.10%

120,000

CenterBook Partners LP

$625,426

0.10%

118,228

CITIGROUP INC

$623,087

0.10%

117,786

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	117,786	$623,087	100.0%	Defined

BANK OF AMERICA CORP /DE/

$584,078

0.09%

110,412

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	80,781	$427,331	73.2%	Defined
BOFA SECURITIES, INC.	29,631	$156,747	26.8%	Defined

WELLS FARGO & COMPANY/MN

$574,746

0.09%

108,648

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	105,644	$558,856	97.2%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,748	$9,246	1.6%	Defined
Wells Fargo Securities, LLC	1,256	$6,644	1.2%	Defined

CITADEL ADVISORS LLC

$550,160

0.09%

104,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	104,000	$550,160	100.0%	Defined

Verition Fund Management LLC

$518,420

0.08%

98,000

STRS OHIO

$430,606

0.07%

81,400

Voleon Capital Management LP

$408,218

0.06%

77,168

Susquehanna Portfolio Strategies, LLC

$403,468

0.06%

76,270

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$396,850

0.06%

75,019

BARCLAYS PLC

$386,222

0.06%

73,010

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	66,002	$349,150	90.4%	Defined
BARCLAYS CAPITAL INC.	7,008	$37,072	9.6%	Defined

MetLife Investment Management, LLC

$368,707

0.06%

69,699

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	69,699	$368,707	100.0%	Defined

AQR CAPITAL MANAGEMENT LLC

$318,767

0.05%

60,259

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Arax Advisory Partners	765	$4,046	1.3%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	199	$1,052	0.3%	Other
Stokes Family Office, LLC	64	$338	0.1%	Other
Held directly	59,231	$313,331	98.3%	Defined

ALLIANCEBERNSTEIN L.P.

$301,530

0.05%

57,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	57,000	$301,530	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$288,717

0.05%

54,578

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	54,578	$288,717	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$280,899

0.04%

53,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	53,100	$280,899	100.0%	Other

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$271,906

0.04%

51,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	51,400	$271,906	100.0%	Other

MANGROVE PARTNERS IM, LLC

$266,039

0.04%

50,291

Diversified Trust Co

$240,816

0.04%

45,523

Cambridge Investment Research Advisors, Inc.

$221,508

0.03%

41,873

Police & Firemen's Retirement System of New Jersey

$205,389

0.03%

38,826

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	38,826	$205,389	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$187,921

0.03%

35,524

SG Americas Securities, LLC

$184,166

0.03%

34,814

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$171,427

0.03%

32,406

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	32,406	$171,427	100.0%	Defined

PROFUND ADVISORS LLC

$161,270

0.03%

30,486

State of Wyoming

$145,152

0.02%

27,439

NEW YORK STATE COMMON RETIREMENT FUND

$144,417

0.02%

27,300

INTECH INVESTMENT MANAGEMENT LLC

$130,493

0.02%

24,668

VOYA INVESTMENT MANAGEMENT LLC

$122,220

0.02%

23,104

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	23,104	$122,220	100.0%	Defined

China Universal Asset Management Co., Ltd.

$117,586

0.02%

22,228

Rafferty Asset Management, LLC

$116,364

0.02%

21,997

PRUDENTIAL FINANCIAL INC

$107,228

0.02%

20,270

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	20,270	$107,228	100.0%	Defined

ProShare Advisors LLC

$106,302

0.02%

20,095

Key facts CIK 1557746 CUSIP 00461U105 13F (30d) 129 filings 126 filers Visit website Investor relations