Aclaris Therapeutics, Inc.
US ˙ NasdaqGS ˙ US00461U1051

SecurityACRS / Aclaris Therapeutics, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership18,294 shares
Latest Disclosed Value $ 68,603
Engineers Gate Manager LP ownership in ACRS / Aclaris Therapeutics, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 18,294 shares of Aclaris Therapeutics, Inc. (US:ACRS) valued at $68,602 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Aclaris Therapeutics, Inc.. The current value of the position is $80,859 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 18,294 18,294 69 0.0009
2026-02-17 2025-12-31 13F ACLARIS THERAPEUTICS COM 00461U105 0 -17,844 -100.00 0 -100.00
2025-11-14 2025-09-30 13F ACLARIS THERAPEUTICS COM 00461U105 17,844 255 1.45 34 37.50 0.0004
2025-08-14 2025-06-30 13F ACLARIS THERAPEUTICS COM 00461U105 17,589 -22,653 -56.29 25 -60.66 0.0003
2025-05-15 2025-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 40,242 -53,305 -56.98 62 -73.59 0.0010
2025-02-14 2024-12-31 13F ACLARIS THERAPEUTICS COM 00461U105 93,547 54,753 141.14 232 425.00 0.0040
2024-11-14 2024-09-30 13F ACLARIS THERAPEUTICS COM 00461U105 38,794 -21,742 -35.92 45 -33.33 0.0009
2024-08-14 2024-06-30 13F ACLARIS THERAPEUTICS COM 00461U105 60,536 3,398 5.95 67 -5.71 0.0015
2024-05-15 2024-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 57,138 -22,651 -28.39 71 -15.66 0.0019
2024-02-14 2023-12-31 13F ACLARIS THERAPEUTICS COM 00461U105 79,789 54,319 213.27 84 -52.30 0.0024
2023-11-14 2023-09-30 13F ACLARIS THERAPEUTICS COM 00461U105 25,470 25,470 174 0.0064
2023-08-14 2023-06-30 13F ACLARIS THERAPEUTICS COM 00461U105 0 -21,725 -100.00 0 -100.00
2023-05-15 2023-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 21,725 21,725 176 0.0073
2022-05-16 2022-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 0 -27,453 -100.00 0 -100.00
2022-02-14 2021-12-31 13F ACLARIS THERAPEUTICS COM 00461U105 27,453 27,453 399 0.0179
2021-11-15 2021-09-30 13F ACLARIS THERAPEUTICS COM 00461U105 0 -24,532 -100.00 0 -100.00
2021-08-16 2021-06-30 13F ACLARIS THERAPEUTICS COM 00461U105 24,532 3,530 16.81 431 -18.53 0.0277
2021-05-17 2021-03-31 13F ACLARIS THERAPEUTICS COM 00461U105 21,002 7,095 51.02 529 487.78 0.0262
2021-02-16 2020-12-31 13F ACLARIS THERAPEUTICS COM 00461U105 13,907 13,907 90 0.0039
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.