ACLARIS THERAPEUTICS INC ACRS
COM · Common Stock · CUSIP 00461U105
Company in St Louis, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersWayne, PA
- Founded2012
- Websiteaclaristx.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 108.3m as of 2025-04-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.55. Options: 5 managers hold calls ($83.1k notional), 3 hold puts ($49.3k).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 127 |
| Q4 2022 | 129 |
| Q1 2023 | 150 |
| Q2 2023 | 134 |
| Q3 2023 | 139 |
| Q4 2023 | 108 |
| Q1 2024 | 99 |
| Q2 2024 | 99 |
| Q3 2024 | 82 |
| Q4 2024 | 99 |
| Q1 2025 | 110 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 64 | 69 |
| Q3 2023 | 81 | 50 |
| Q4 2023 | 64 | 78 |
| Q1 2024 | 45 | 66 |
| Q2 2024 | 42 | 62 |
| Q3 2024 | 29 | 53 |
| Q4 2024 | 54 | 38 |
| Q1 2025 | 59 | 38 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $50.7k | $4.0k | 0.08 |
| Q3 2024 | $67.4k | $6.2k | 0.09 |
| Q4 2024 | $849.9k | $371.5k | 0.44 |
| Q1 2025 | $83.1k | $49.3k | 0.59 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | Added | +2.2m |
| Decheng Capital LLC | Added | +1.8m |
| Bollard Group LLC | New | +1.4m |
| MORGAN STANLEY | Added | +1.3m |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +1.3m |
| CITADEL ADVISORS LLC | Added | +1.1m |
| Qube Research & Technologies Ltd | Added | +735.7k |
| VANGUARD GROUP INC | Added | +645.0k |
| CANTOR FITZGERALD, L. P. | Added | +595.6k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +451.0k |
Biggest sellers
| JANUS HENDERSON GROUP PLC | Sold out | -2.8m |
| SAMSARA BIOCAPITAL, LLC | Sold out | -2.4m |
| Rock Springs Capital Management LP | Reduced | -1.2m |
| Walleye Capital LLC | Reduced | -407.2k |
| Peapod Lane Capital LLC | Sold out | -404.5k |
| Exome Asset Management LLC | Sold out | -389.3k |
| D. E. Shaw & Co., Inc. | Reduced | -349.1k |
| MARSHALL WACE, LLP | Reduced | -321.1k |
| 683 Capital Management, LLC | Sold out | -217.3k |
| Ikarian Capital, LLC | Reduced | -199.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $46.4k30.3k shares |
| GROUP ONE TRADING LLC | Reduced | $22.9k15.0k shares |
| CITADEL ADVISORS LLC | Reduced | $7.8k5.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $6.0k4.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Reduced | $49.0k32.0k shares |
| GROUP ONE TRADING LLC | New | $306200 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BML Investment Partners, L.P. 13G · passive investor -2.0 pts · filed 2026-04-27 | 9.9% |
| Bonita Biotech (HK) Ltd 13G · passive investor filed 2026-01-09 | 9.4% |
| RA CAPITAL MANAGEMENT, L.P. 13G · passive investor +2.8 pts · filed 2026-08-14 | 9.1% |
| Deep Track Capital, LP 13G · passive investor new · filed 2026-03-17 | 7.0% |
| BlackRock, Inc. 13G · institution +1.1 pts · filed 2026-01-21 | 6.2% |
| Frazier Life Sciences Public Fund, L.P. 13G · passive investor new · filed 2026-09-21 | 5.4% |
Fell to 5% or below in the last year: Vivo Opportunity Fund Holdings, L.P. (4.3%, 2026-05-12), VANGUARD GROUP INC (0.0%, 2026-03-26)
Insider purchases and sales in Q1 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 1 | $61.7k | $61.7k |
| Q3 2023 | 2 | $175.0k | 1 | $43.9k | $43.9k |
| Q4 2023 | 0 | — | 1 | $30.5k | $30.5k |
| Q1 2024 | 1 | $18.0k | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 1 | $1.5m | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| BML Capital Management, LLC 17.65% of their portfolio | 14.2m $21.8m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.03% of their portfolio | 9.6m $14.7m | Unchanged |
| Vivo Capital, LLC 1.80% of their portfolio | 8.9m $13.6m | Unchanged |
| Rock Springs Capital Management LP 0.44% of their portfolio | 5.0m $7.7m | Reduced -1.2m |
| VANGUARD GROUP INC 0.00% of their portfolio | 5.0m $7.6m | Added +645.0k |
| RA CAPITAL MANAGEMENT, L.P. 0.12% of their portfolio | 4.7m $7.1m | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 4.1m $6.3m | Added +2.2m |
| Decheng Capital LLC 1.73% of their portfolio | 4.0m $6.2m | Added +1.8m |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 2.9m $4.5m | Reduced -349.1k |
| MORGAN STANLEY 0.00% of their portfolio | 2.4m $3.7m | Added +1.3m |
| MARSHALL WACE, LLP 0.00% of their portfolio | 2.3m $3.5m | Reduced -321.1k |
| Logos Global Management LP 0.60% of their portfolio | 2.2m $3.4m | Unchanged |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 2.2m $3.4m | Added +451.0k |
| Bollard Group LLC 0.06% of their portfolio | 1.4m $2.2m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 1.4m $2.1m | Added +1.3m |
| BlackRock, Inc. 0.00% of their portfolio | 1.4m $2.1m | Added +103.3k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 1.4m $2.1m | Added +735.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.2m $1.8m | Added +393.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 1.1m $1.7m | Added +1.1m |
| Aldebaran Capital, LLC 1.46% of their portfolio | 1.0m $1.5m | Reduced -9.0k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 951.4k $1.5m | Added +100.9k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 923.3k $1.4m | Unchanged |
| Monashee Investment Management LLC 0.16% of their portfolio | 888.9k $1.4m | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 865.0k $1.3m | Reduced -43.8k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 858.4k $1.3m | Reduced -119.0k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 820.3k $1.3m | Reduced -19.0k |
| Palo Alto Investors LP 0.23% of their portfolio | 776.0k $1.2m | Added +206.2k |
| CANTOR FITZGERALD, L. P. 0.04% of their portfolio | 695.6k $1.1m | Added +595.6k |
| Assenagon Asset Management S.A. 0.00% of their portfolio | 681.6k $1.0m | Added +284.2k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 556.0k $850.6k | Added +127.4k |
| Stonepine Capital Management, LLC 2.69% of their portfolio | 527.8k $2.8m | Reduced -135.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 498.7k $763.0k | Added +410.4k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio | 460.8k $705.1k | Reduced -115.2k |
| FMR LLC 0.00% of their portfolio | 458.2k $701.0k | Reduced -865 |
| Aisling Capital Management LP 0.23% of their portfolio | 434.5k $664.7k | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 407.5k $623.5k | Added +88.2k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 390.3k $597.1k | Reduced -155.3k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 354.8k $543.3k | Added +115.3k |
| Squarepoint Ops LLC 0.00% of their portfolio | 348.9k $533.8k | Added +56.0k |
| HighTower Advisors, LLC 0.00% of their portfolio | 316.1k $483.6k | Added +53.1k |
| Walleye Capital LLC 0.01% of their portfolio | 311.7k $476.9k | Reduced -407.2k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 288.7k $441.7k | Added +7.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 269.1k $411.7k | Added +93.9k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 250.8k $383.7k | Added +96.5k |
| Man Group plc 0.00% of their portfolio | 197.7k $302.6k | Added +144.2k |
| Graham Capital Management, L.P. 0.01% of their portfolio | 177.6k $271.7k | Added +163.4k |
| OMERS ADMINISTRATION Corp 0.00% of their portfolio | 175.9k $269.1k | Added +121.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 167.7k $256.5k | Reduced -37.8k |
| Ikarian Capital, LLC 0.08% of their portfolio | 150.9k $230.9k | Reduced -199.1k |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 127.6k $195.2k | Reduced -4.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 123.1k $189.0k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 119.0k $182.1k | Added +103.8k |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 86.3k $132.1k | Reduced -169.7k |
| ALPS ADVISORS INC 0.00% of their portfolio | 78.8k $120.5k | Added +21.0k |
| UBS Group AG 0.00% of their portfolio | 74.0k $113.2k | Added +4.5k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 70.5k $107.9k | New |
| SG Americas Securities, LLC 0.00% of their portfolio | 67.9k $104.0k | New |
| Jain Global LLC 0.00% of their portfolio | 65.7k $100.5k | Added +41.2k |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 59.9k $92.0k | Added +49.2k |
| Invesco Ltd. 0.00% of their portfolio | 57.1k $87.3k | Added +45.9k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.00% of their portfolio | 53.5k $81.8k | Reduced -59.0k |
| Quantessence Capital LLC 0.02% of their portfolio | 51.7k $79.0k | New |
| LMR Partners LLP 0.00% of their portfolio | 48.4k $74.0k | New |
| State of Wyoming 0.01% of their portfolio | 46.9k $71.7k | New |
| Point72 Asia (Singapore) Pte. Ltd. 0.02% of their portfolio | 45.7k $69.9k | Reduced -2.5k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 41.9k $64.0k | Unchanged |
| OXFORD ASSET MANAGEMENT LLP 0.03% of their portfolio | 41.7k $63.8k | Not comparable |
| Engineers Gate Manager LP 0.00% of their portfolio | 40.2k $61.6k | Reduced -53.3k |
| Jefferies Financial Group Inc. 0.00% of their portfolio | 40.2k $61.5k | Reduced -500 |
| ALGERT GLOBAL LLC 0.00% of their portfolio | 39.9k $61.0k | New |
| Quadrature Capital Ltd 0.00% of their portfolio | 39.3k $59.8k | New |
| Mariner, LLC 0.00% of their portfolio | 38.0k $58.1k | Added +195 |
| Cannon Global Investment Management, LLC 0.16% of their portfolio | 37.4k $57.2k | New |
| Verition Fund Management LLC 0.00% of their portfolio | 35.8k $54.8k | New |
| Velan Capital Investment Management LP 0.06% of their portfolio | 35.0k $53.5k | Added +8.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 33.1k $50.6k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.00% of their portfolio | 30.5k $47.0k | New |
| Diametric Capital, LP 0.05% of their portfolio | 30.1k $46.1k | New |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.00% of their portfolio | 29.3k $44.9k | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 25.2k $38.5k | New |
| CAPSTONE INVESTMENT ADVISORS, LLC 0.00% of their portfolio | 23.6k $36.1k | New |
| Vontobel Holding Ltd. 0.00% of their portfolio | 22.0k $33.7k | Added +6.0k |
| HRT FINANCIAL LP 0.00% of their portfolio | 17.3k $26.0k | New |
| Catalyst Funds Management Pty Ltd 0.01% of their portfolio | 16.7k $25.5k | Added +2.7k |
| Capula Management Ltd 0.00% of their portfolio | 15.6k $23.9k | Not comparable |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 14.7k $22.0k | Unchanged |
| Marex Group Ltd 0.00% of their portfolio | 14.4k $22.0k | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 13.6k $20.8k | New |
| NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio | 12.7k $19.4k | Unchanged |
| Hudson Bay Capital Management LP 0.00% of their portfolio | 12.2k $18.7k | New |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 11.8k $18.0k | Reduced -94.6k |
| Brevan Howard Capital Management LP 0.00% of their portfolio | 11.4k $17.4k | New |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 11.0k $16.8k | New |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 10.2k $15.6k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 7.5k $11.4k | First filing |
| CITIGROUP INC 0.00% of their portfolio | 6.1k $9.4k | Reduced -53.8k |
| Point72 (DIFC) Ltd 0.00% of their portfolio | 6.1k $9.4k | Added +2.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 4.6k $7.0k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3.4k $5.2k | Reduced -14.5k |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 2.9k $4.5k | Reduced -1.4k |