Who owns Aclaris Therapeutics, Inc. (ACRS)
Which tracked institutional funds hold ACRS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ACRS company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
39 tracked funds added or opened ACRS while 17 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ACRS’s largest tracked holder by dollar value, BML Capital Management, LLC, sizes it at 34.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 34.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in ACRS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 136 tracked filers holding ACRS, 73 increased or opened the position and 61 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ACRS between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 16
- Deep Track Capital, LP$35M
- RA CAPITAL MANAGEMENT, L.P.$26M
- VANGUARD CAPITAL MANAGEMENT LLC$19M
- Frazier Life Sciences Management, L.P.$18M
- BALYASNY ASSET MANAGEMENT L.P.$13M
- BRAIDWELL LP$6M
Full exits 4
- VANGUARD GROUP INC$20M
- KOTLER KEVIN$5M
- AMERIPRISE FINANCIAL INC$958K
- TWO SIGMA ADVISERS, LP$769K
Largest adds
- BML Capital Management, LLC$11M
- BlackRock, Inc.$7M
- CITADEL ADVISORS LLC$5M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$4M
- Rock Springs Capital Management LP$3M
- Woodline Partners LP$3M
Largest trims
- NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$1.3B
- D. E. Shaw & Co., Inc.$3M
- Vivo Capital, LLC$2M
- RENAISSANCE TECHNOLOGIES LLC$2M
- ADAR1 Capital Management, LLC$1M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$1M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BML Capital Management, LLC | 14,250,000 | $53M | 12.2% | 2026-Q1 |
| Deep Track Capital, LP added | 9,345,000 | $35M | 8.0% | 2026-Q1 |
| BlackRock, Inc. added | 7,407,065 | $28M | 6.4% | 2026-Q1 |
| RA CAPITAL MANAGEMENT, L.P. added | 6,804,072 | $26M | 5.8% | 2026-Q1 |
| Vivo Capital, LLC trimmed | 6,666,666 | $25M | 5.7% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,167,469 | $19M | 4.4% | 2026-Q1 |
| Frazier Life Sciences Management, L.P. added | 4,925,374 | $18M | 4.2% | 2026-Q1 |
| Rock Springs Capital Management LP added | 4,472,650 | $17M | 3.8% | 2026-Q1 |
| Decheng Capital LLC | 4,041,736 | $15M | 3.5% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 3,871,000 | $15M | 3.3% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 3,361,328 | $13M | 2.9% | 2026-Q1 |
| MORGAN STANLEY trimmed | 2,746,302 | $10M | 2.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,423,691 | $9M | 2.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 2,249,319 | $8M | 1.9% | 2026-Q1 |
| STATE STREET CORP added | 2,008,746 | $8M | 1.7% | 2026-Q1 |
| BRAIDWELL LP trimmed | 1,699,116 | $6M | 1.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 1,656,066 | $6M | 1.4% | 2026-Q1 |
| Palo Alto Investors LP added | 1,613,430 | $6M | 1.4% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 1,539,791 | $6M | 1.3% | 2026-Q1 |
| Woodline Partners LP added | 1,485,623 | $6M | 1.3% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 1,418,360 | $5M | 1.2% | 2026-Q1 |
| Kalehua Capital Management LLC new | 1,337,556 | $5M | 1.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 997,850 | $4M | 0.9% | 2026-Q1 |
| Aldebaran Capital, LLC trimmed | 947,162 | $4M | 0.8% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 900,804 | $3M | 0.8% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 756,127 | $3M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 728,225 | $3M | 0.6% | 2026-Q1 |
| Three Bridge Wealth Advisors, LLC | 714,823 | $3M | 0.6% | 2026-Q1 |
| MARSHALL WACE, LLP added | 700,684 | $3M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 628,859 | $2M | 0.5% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 588,691 | $2M | 0.5% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 511,461 | $2M | 0.4% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 502,631 | $2M | 0.4% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 502,290 | $2M | 0.4% | 2026-Q1 |
| Logos Global Management LP trimmed | 500,000 | $2M | 0.4% | 2026-Q1 |
| Monashee Investment Management LLC trimmed | 500,000 | $2M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 486,633 | $2M | 0.4% | 2026-Q1 |
| Aisling Capital Management LP | 434,455 | $2M | 0.4% | 2026-Q1 |
| Bollard Group LLC trimmed | 431,631 | $2M | 0.4% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 395,637 | $1M | 0.3% | 2026-Q1 |
| MPM BIOIMPACT LLC new | 391,918 | $1M | 0.3% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 379,930 | $1M | 0.3% | 2026-Q1 |
| SUPERSTRING CAPITAL MANAGEMENT LP new | 366,490 | $1M | 0.3% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 330,019 | $1M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 308,165 | $1M | 0.3% | 2026-Q1 |
| HighTower Advisors, LLC trimmed | 305,836 | $1M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 266,448 | $999K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 260,990 | $979K | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 257,156 | $964K | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 217,154 | $814K | 0.2% | 2026-Q1 |
| Invesco Ltd. added | 214,935 | $806K | 0.2% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP new | 213,405 | $800K | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp added | 207,024 | $776K | 0.2% | 2026-Q1 |
| UBS Group AG trimmed | 206,814 | $776K | 0.2% | 2026-Q1 |
| Verdad Advisers, LP new | 197,042 | $739K | 0.2% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 194,510 | $729K | 0.2% | 2026-Q1 |
| Informed Momentum Co LLC trimmed | 178,378 | $669K | 0.2% | 2026-Q1 |
| Assenagon Asset Management S.A. added | 177,283 | $665K | 0.2% | 2026-Q1 |
| FMR LLC added | 176,353 | $661K | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 156,725 | $588K | 0.1% | 2026-Q1 |
| Creative Planning added | 152,088 | $570K | 0.1% | 2026-Q1 |
| ADAR1 Capital Management, LLC trimmed | 132,426 | $497K | 0.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 118,702 | $445K | 0.1% | 2026-Q1 |
| Nuveen, LLC trimmed | 118,020 | $443K | 0.1% | 2026-Q1 |
| ALPS ADVISORS INC added | 98,175 | $368K | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 97,774 | $367K | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 79,539 | $298K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 75,401 | $283K | 0.1% | 2026-Q1 |
| Quadrature Capital Ltd added | 72,540 | $272K | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 72,408 | $272K | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 68,793 | $258K | 0.1% | 2026-Q1 |
| CenterBook Partners LP new | 66,598 | $250K | 0.1% | 2026-Q1 |
| MetLife Investment Management, LLC added | 43,870 | $165K | 0.0% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 43,589 | $163K | 0.0% | 2026-Q1 |
| Cambridge Investment Research Advisors, Inc. | 41,873 | $157K | 0.0% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC | 39,701 | $149K | 0.0% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 36,262 | $136K | 0.0% | 2026-Q1 |
| EntryPoint Capital, LLC new | 33,007 | $124K | 0.0% | 2026-Q1 |
| Diversified Trust Co new | 29,455 | $110K | 0.0% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 27,300 | $102K | 0.0% | 2026-Q1 |
| SG Americas Securities, LLC added | 26,767 | $100K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,502,080 | $20M | 4.5% | 2025-Q4 stale |
| KOTLER KEVIN new | 1,705,929 | $5M | 1.2% | 2025-Q4 stale |
| AMERIPRISE FINANCIAL INC trimmed | 318,426 | $958K | 0.2% | 2025-Q4 stale |
| TWO SIGMA ADVISERS, LP trimmed | 255,400 | $769K | 0.2% | 2025-Q4 stale |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 460,842 | $705K | 0.2% | 2025-Q1 stale |
| CANTOR FITZGERALD, L. P. trimmed | 451,120 | $641K | 0.1% | 2025-Q2 stale |
| Squarepoint Ops LLC added | 390,583 | $555K | 0.1% | 2025-Q2 stale |
| Walleye Capital LLC trimmed | 311,712 | $477K | 0.1% | 2025-Q1 stale |
| Stonepine Capital Management, LLC trimmed | 192,900 | $367K | 0.1% | 2025-Q3 stale |
| Seven Fleet Capital Management LP new | 107,419 | $323K | 0.1% | 2025-Q4 stale |
| Graham Capital Management, L.P. added | 177,558 | $272K | 0.1% | 2025-Q1 stale |
| OMERS ADMINISTRATION Corp added | 175,900 | $269K | 0.1% | 2025-Q1 stale |
| Point72 Asset Management, L.P. trimmed | 87,175 | $262K | 0.1% | 2025-Q4 stale |
| Ikarian Capital, LLC trimmed | 150,900 | $231K | 0.1% | 2025-Q1 stale |
| Schonfeld Strategic Advisors LLC trimmed | 127,592 | $195K | 0.0% | 2025-Q1 stale |
| Cubist Systematic Strategies, LLC trimmed | 86,348 | $132K | 0.0% | 2025-Q1 stale |
| Man Group plc trimmed | 42,435 | $128K | 0.0% | 2025-Q4 stale |
| ALGERT GLOBAL LLC added | 65,630 | $125K | 0.0% | 2025-Q3 stale |
| Jain Global LLC added | 65,672 | $100K | 0.0% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.