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ACRS · Aclaris Therapeutics, Inc. · Holdings

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$3.82 +0.05 (+1.33%)
Russell 2000 member Rebalance outlook locked
Market Cap
$570.40M
Shares
147.20M
Volume · Oct 21 2.66M Avg daily vol (3M) 2.74M

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.

Use institutional holdings through the 13F API or MCP → See every holder of ACRS: 13F, 13D and 13G, insiders and funds →
Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 151
Total Value: $634,358,099
Total Shares: 119,918,129
Showing 1–100 of 156 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 149 13F filers
Top Holder
10.6%
Sep 2023 → Jun 2026 · range 9.6% – 28.0%
of institutional value
Top 5
42.3%
Sep 2023 → Jun 2026 · range 37.9% – 55.1%
of institutional value
Top 10
61.7%
Sep 2023 → Jun 2026 · range 57.8% – 73.8%
of institutional value
HHI
498
Sep 2023 → Jun 2026 · range 442 – 1,081
Broadly held

Who Holds ACRS

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 148 filers, like-for-like change +9.1%; actively managed books +7.2%; index-like books +16.4%.

Holder type Share Filers Change
Registered adviser 55.0% 73 +18.2%
Exempt adviser 11.6% 2 -18.7%
Adviser 9.7% 4 +6.1%
Bank 4.8% 14 +49.9%
Insurer 0.0% 1 +51.5%
Benefit plan 0.1% 2 +294.4%
Non-US 0.9% 4 +6.0%
Holding company 9.6% 8 +1.6%
Broker-dealer 0.0% 0 —
Unknown 8.4% 40 +1.7%

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

148 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
6
4.05% of filers hold it in their top 10
Mar 31, 2026: 4
Holders above 5%
2
median weight 0.001%
Mar 31, 2026: 1
Crowding
49.2%
of shares outstanding, 97th percentile
Mar 31, 2026: 53.1%
Private-fund advisers
48.1%
of shares outstanding
Institutional ownership
85.3%
97.6% of the estimated free float
Top 10 holders
62.1%
of 13F shares, Herfindahl 0.050
Active holders
+7.2%
like-for-like share change of active filers
5% stakes on record
6
0 13D, 6 13G (1 institutional, 4 passive, 0 exempt)
How long holders have held it value-weighted 8.5 quarters
Under 1 year 42.7% 1 to 3 years 39.7% 3 years or more 17.6% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost
$2.94
estimated per share
Mar 31, 2026: $2.60
Quarter-end price
$5.29
implied by 13F values
Estimated gain or loss
+79.9%
price against the estimated cost
Estimated at a loss
0.263%
of costed 13F value

Estimated cost covers 70.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies ACRS's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 TIL Instil Bio, Inc. 3
2 DYN Dyne Therapeutics, Inc. 9
3 BCAX Bicara Therapeutics Inc. 6
4 ACHV Achieve Life Sciences, Inc. 5
5 CLDX Celldex Therapeutics, Inc. 8
6 ACAD Acadia Pharmaceuticals Inc 6
7 AVTX Avalo Therapeutics, Inc. 7
8 TRVI Trevi Therapeutics, Inc. 8
9 JANX Janux Therapeutics, Inc. 4
10 COAG Hemab Therapeutics Holdings, Inc. 4

Shareholder Targets

13F filers that own its peers but not ACRS, quarter ended Jun 30, 2026

Found through its holder-overlap peers: TIL, DYN, BCAX, ACHV, CLDX, ACAD, AVTX, TRVI, JANX, COAG, DNTH, URGN, ORIC, ERAS, DRUG, OKUR, GLUE, OLMA, ZLAB, IMCR. 653 filers in all.

# Filer In peers
1 T. Rowe Price Investment Management, Inc. Adviser, Diversified active $1,641,992,760 5 held
2 BAKER BROS. ADVISORS LP Registered adviser, Concentrated $1,346,167,885 6 held
3 RTW INVESTMENTS, LP Registered adviser, Diversified active $983,694,201 7 held
4 Jupiter Topco LLC Unknown, Diversified active $641,554,353 15 held
5 Siren, L.L.C. Unknown, Diversified active $625,652,723 7 held
6 TCG Crossover Management, LLC Unknown, Diversified active $577,655,516 6 held
7 Venrock Adviser, LLC Registered adviser, Concentrated $555,834,294 5 held
8 Vestal Point Capital, LP Registered adviser, Diversified active $523,258,510 9 held
9 NEA Management Company, LLC Registered adviser, Concentrated $479,535,006 4 held
10 Kynam Capital Management, LP Registered adviser, Concentrated $331,300,473 3 held

Fund Ownership of ACRS by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 11.10% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 2.26% 3,328,823
Index ETFs 8.84% 13,011,185
Active ETFs 0.48% 709,613
Active funds 0.91% 1,337,756
Unclassified 0.08% 118,702
All registered funds 12.57% 18,506,079
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 74 Exempt adviser 3 Adviser 4 Bank 14 Insurer 1 Benefit plan 2 Non-US 4 Holding company 8 Unknown 41
Showing 100 of 156
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
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
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 3.39% 4,071,000
Decheng Capital LLC $21,380,783 3.37% 4,041,736
STATE STREET CORP $17,220,748 2.71% 3,255,340
GEODE CAPITAL MANAGEMENT, LLC $16,875,405 2.66% 3,190,058
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
Jones Hill Capital LP $9,307,712 1.47% 1,759,492
ACADIAN ASSET MANAGEMENT LLC $8,683,386 1.37% 1,641,472
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
MPM BIOIMPACT LLC $5,514,650 0.87% 1,042,467
DEUTSCHE BANK AG\ $5,506,651 0.87% 1,040,955
NORTHERN TRUST CORP $5,283,454 0.83% 998,763
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
MILLENNIUM MANAGEMENT LLC $2,771,404 0.44% 523,895
CITADEL ADVISORS LLC $2,756,090 0.43% 521,000
DIMENSIONAL FUND ADVISORS LP $2,718,211 0.43% 513,840
JPMORGAN CHASE & CO $2,480,818 0.39% 468,964
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
SUSQUEHANNA INTERNATIONAL GROUP, LLP $2,182,384 0.34% 412,549
Tetragon Partners GP Ltd $2,116,000 0.33% 400,000
Russell Investments Group, Ltd. $1,931,138 0.30% 365,055
CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,830,646 0.29% 346,058
FMR LLC $1,660,264 0.26% 313,850
Bank of New York Mellon Corp $1,494,947 0.24% 282,599
Nuveen, LLC $1,472,756 0.23% 278,404
RAYMOND JAMES FINANCIAL INC $1,457,981 0.23% 275,611
WELLINGTON MANAGEMENT GROUP LLP $1,415,063 0.22% 267,498
SUPERSTRING CAPITAL MANAGEMENT LP $1,363,100 0.21% 257,675
UBS Group AG $1,359,533 0.21% 257,001
Invesco Ltd. $1,285,616 0.20% 243,028
PRICE T ROWE ASSOCIATES INC /MD/ $1,172,258 0.18% 221,599
HighTower Advisors, LLC $1,150,701 0.18% 217,524
Creative Planning $1,093,162 0.17% 206,647
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. $812,954 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
MORGAN STANLEY $709,477 0.11% 134,117
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
BANK OF AMERICA CORP /DE/ $584,078 0.09% 110,412
WELLS FARGO & COMPANY/MN $574,746 0.09% 108,648
CITADEL ADVISORS LLC $550,160 0.09% 104,000
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
MetLife Investment Management, LLC $368,707 0.06% 69,699
AQR CAPITAL MANAGEMENT LLC $318,767 0.05% 60,259
ALLIANCEBERNSTEIN L.P. $301,530 0.05% 57,000
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. $288,717 0.05% 54,578
SUSQUEHANNA INTERNATIONAL GROUP, LLP $280,899 0.04% 53,100
SUSQUEHANNA INTERNATIONAL GROUP, LLP $271,906 0.04% 51,400
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
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
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
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
ProShare Advisors LLC $106,302 0.02% 20,095

Showing the top 100 of 156 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1557746 CUSIP 00461U105 13F (30d) 12 filings 12 filers Visit website Investor relations