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 ($23.6k this quarter). Holder counts are more reliable. Shares outstanding: 139.7m as of 2026-04-30, 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 ≈ $3.75. Options: 6 managers hold calls ($2.6m notional), 4 hold puts ($1.1m).
Trends to Q1 2026
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 |
| Q2 2025 | 97 |
| Q3 2025 | 103 |
| Q4 2025 | 122 |
| Q1 2026 | 136 |
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 2024 | 42 | 62 |
| Q3 2024 | 29 | 53 |
| Q4 2024 | 54 | 38 |
| Q1 2025 | 59 | 38 |
| Q2 2025 | 52 | 64 |
| Q3 2025 | 41 | 47 |
| Q4 2025 | 55 | 45 |
| Q1 2026 | 70 | 56 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $5.0k | $0 | 0.00 |
| Q3 2025 | $33.2k | $0 | 0.00 |
| Q4 2025 | $3.5m | $0 | 0.00 |
| Q1 2026 | $2.6m | $1.1m | 0.44 |
Biggest buyers
| Deep Track Capital, LP | New | +9.3m |
| RA CAPITAL MANAGEMENT, L.P. | New | +6.8m |
| Frazier Life Sciences Management, L.P. | New | +4.9m |
| Balyasny Asset Management L.P. | New | +3.4m |
| Kalehua Capital Management LLC | New | +3.2m |
| BRAIDWELL LP | New | +1.7m |
| CITADEL ADVISORS LLC | Added | +1.0m |
| Woodline Partners LP | Added | +743.6k |
| BlackRock, Inc. | Added | +602.2k |
| STATE STREET CORP | Added | +502.3k |
Biggest sellers
| Vivo Capital, LLC | Reduced | -2.2m |
| D. E. Shaw & Co., Inc. | Reduced | -1.2m |
| MORGAN STANLEY | Reduced | -669.1k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -622.7k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -582.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -536.9k |
| ADAR1 Capital Management, LLC | Reduced | -481.6k |
| Bollard Group LLC | Reduced | -372.8k |
| AMERIPRISE FINANCIAL INC | Sold out | -318.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -297.1k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $1.7m466.4k shares |
| JANE STREET GROUP, LLC | New | $345.8k92.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $321.0k85.6k shares |
| SIMPLEX TRADING, LLC | Added | $73.1k19.5k shares |
| IMC-Chicago, LLC | New | $49.1k13.1k shares |
| GROUP ONE TRADING LLC | Unchanged | $30.0k8.0k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $505.9k134.9k shares |
| CITADEL ADVISORS LLC | New | $383.6k102.3k shares |
| SIMPLEX TRADING, LLC | New | $244.5k65.2k shares |
| GROUP ONE TRADING LLC | New | $4.1k1.1k 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), Adage Capital Management, L.P. (4.9%, 2025-11-13)
Insider purchases and sales in Q1 2026
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 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 1 | $1.5m | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BML Capital Management, LLC 34.38% of their portfolio | 14.2m $53.4m | Unchanged |
| Deep Track Capital, LP 0.72% of their portfolio | 9.3m $35.0m | New |
| BlackRock, Inc. 0.00% of their portfolio | 7.4m $27.8m | Added +602.2k |
| RA CAPITAL MANAGEMENT, L.P. 0.27% of their portfolio | 6.8m $25.5m | New |
| Vivo Capital, LLC 2.08% of their portfolio | 6.7m $25.0m | Reduced -2.2m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 5.2m $19.4m | First filing |
| Frazier Life Sciences Management, L.P. 0.48% of their portfolio | 4.9m $18.5m | New |
| Rock Springs Capital Management LP 0.99% of their portfolio | 4.5m $16.8m | Added +18.9k |
| Decheng Capital LLC 2.29% of their portfolio | 4.0m $15.2m | Unchanged |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.02% of their portfolio | 3.9m $14.5m | Added +500.0k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 3.4m $12.6m | New |
| Kalehua Capital Management LLC 4.57% of their portfolio | 3.2m $11.9m | New |
| MORGAN STANLEY 0.00% of their portfolio | 2.7m $10.3m | Reduced -669.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.4m $9.1m | Added +30.9k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 2.2m $8.4m | Added +1.0m |
| STATE STREET CORP 0.00% of their portfolio | 2.0m $7.5m | Added +502.3k |
| BRAIDWELL LP 0.21% of their portfolio | 1.7m $6.4m | New |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 1.7m $6.2m | First filing |
| Palo Alto Investors LP 0.93% of their portfolio | 1.6m $6.1m | Added +46.6k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 1.5m $5.8m | Reduced -582.6k |
| Woodline Partners LP 0.02% of their portfolio | 1.5m $5.6m | Added +743.6k |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 1.4m $5.3m | Reduced -15.8k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 997.9k $3.7m | Added +10.5k |
| Aldebaran Capital, LLC 2.72% of their portfolio | 947.2k $3.6m | Reduced -7.1k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 900.8k $3.4m | Reduced -1.2m |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 756.1k $2.8m | Reduced -297.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 728.2k $2.7m | Added +64.0k |
| Three Bridge Wealth Advisors, LLC 0.74% of their portfolio | 714.8k $2.7m | Unchanged |
| MARSHALL WACE, LLP 0.00% of their portfolio | 713.0k $2.7m | Added +227.5k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 628.9k $2.4m | First filing |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 588.7k $2.2m | Reduced -43.8k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 511.5k $1.9m | Added +240.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 502.6k $1.9m | Reduced -622.7k |
| PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio | 502.3k $1.9m | Added +434.1k |
| Monashee Investment Management LLC 1.02% of their portfolio | 500.0k $1.9m | New |
| Logos Global Management LP 0.10% of their portfolio | 500.0k $1.9m | Reduced -100.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 486.6k $1.7m | Reduced -139.3k |
| Aisling Capital Management LP 0.34% of their portfolio | 434.5k $1.6m | Unchanged |
| Bollard Group LLC 0.05% of their portfolio | 431.6k $1.6m | Reduced -372.8k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 395.6k $1.5m | Reduced -178.6k |
| MPM BIOIMPACT LLC 0.11% of their portfolio | 391.9k $1.5m | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 379.9k $1.4m | Reduced -536.9k |
| SUPERSTRING CAPITAL MANAGEMENT LP 0.98% of their portfolio | 366.5k $1.4m | New |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 330.0k $1.2m | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 308.2k $1.2m | Added +298.4k |
| HighTower Advisors, LLC 0.00% of their portfolio | 305.8k $1.1m | Reduced -112 |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 266.4k $999.2k | Reduced -3.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 261.0k $978.7k | Reduced -23.6k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 257.2k $964.3k | Reduced -7.2k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 217.2k $814.3k | New |
| Invesco Ltd. 0.00% of their portfolio | 214.9k $806.0k | Added +5.0k |
| MACKENZIE FINANCIAL CORP 0.00% of their portfolio | 213.4k $800.3k | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 207.0k $776.3k | Added +3.5k |
| UBS Group AG 0.00% of their portfolio | 206.8k $775.6k | Reduced -155.7k |
| Verdad Advisers, LP 0.83% of their portfolio | 197.0k $738.9k | New |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 194.5k $729.4k | Reduced -252.7k |
| Informed Momentum Co LLC 0.08% of their portfolio | 178.4k $668.9k | New |
| Assenagon Asset Management S.A. 0.00% of their portfolio | 177.3k $664.8k | Added +22.7k |
| FMR LLC 0.00% of their portfolio | 176.4k $661.3k | Added +130.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 156.7k $588.0k | Added +16.6k |
| Creative Planning 0.00% of their portfolio | 152.1k $570.3k | Added +100.9k |
| ADAR1 Capital Management, LLC 0.03% of their portfolio | 132.4k $496.6k | Reduced -481.6k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 118.7k $445.1k | Added +41.1k |
| Nuveen, LLC 0.00% of their portfolio | 118.0k $442.6k | Reduced -119.8k |
| ALPS ADVISORS INC 0.00% of their portfolio | 98.2k $368.2k | Added +9.2k |
| XTX Topco Ltd 0.01% of their portfolio | 97.8k $366.7k | Reduced -15.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 79.5k $298.3k | Added +15.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 75.4k $282.7k | Added +3.6k |
| Quadrature Capital Ltd 0.00% of their portfolio | 72.5k $272.0k | Added +14.9k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 72.4k $271.5k | Reduced -31.4k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 68.8k $258.0k | First filing |
| CenterBook Partners LP 0.01% of their portfolio | 66.6k $249.7k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 43.9k $164.5k | Added +18.3k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 43.6k $163.5k | Added +1.0k |
| Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio | 41.9k $157.0k | Unchanged |
| Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio | 39.7k $148.9k | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 36.3k $136.0k | Reduced -68.2k |
| EntryPoint Capital, LLC 0.04% of their portfolio | 33.0k $123.8k | New |
| DIVERSIFIED TRUST CO 0.00% of their portfolio | 29.5k $110.5k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 27.3k $102.4k | Unchanged |
| SG Americas Securities, LLC 0.00% of their portfolio | 26.8k $100.0k | Added +11.3k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 25.4k $95.2k | Reduced -3.6k |
| Vontobel Holding Ltd. 0.00% of their portfolio | 25.0k $93.8k | Reduced -1.0k |
| TWO SIGMA SECURITIES, LLC 0.01% of their portfolio | 22.5k $84.3k | Added +10.9k |
| NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio | 22.1k $82.7k | Added +3.1k |
| BARCLAYS PLC 0.00% of their portfolio | 21.5k $80.7k | Reduced -121.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 21.4k $80.4k | Reduced -71 |
| China Universal Asset Management Co., Ltd. 0.01% of their portfolio | 21.4k $80.3k | Added +3.7k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 19.7k $73.9k | Unchanged |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 19.2k $72.0k | Reduced -27.4k |
| ProShare Advisors LLC 0.00% of their portfolio | 18.7k $70.1k | Reduced -2.9k |
| Engineers Gate Manager LP 0.00% of their portfolio | 18.3k $68.6k | New |
| CRA Financial Services, LLC 0.01% of their portfolio | 17.8k $66.7k | Unchanged |
| Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio | 17.6k $65.8k | New |
| CIBC Asset Management Inc 0.00% of their portfolio | 17.4k $65.4k | Unchanged |
| ExodusPoint Capital Management, LP 0.00% of their portfolio | 16.9k $63.4k | New |
| Hudson Bay Capital Management LP 0.00% of their portfolio | 16.8k $63.1k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 16.3k $61.2k | Reduced -937 |
| STRS OHIO 0.00% of their portfolio | 16.0k $60.0k | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 15.2k $45.8k | Unchanged |