Axcelis Technologies, Inc.
US ˙ NasdaqGS ˙ US0545402085

SecurityACLS / Axcelis Technologies, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership8,849 shares
Latest Disclosed Value $ 824
Amalgamated Bank reports 1.81% decrease in ownership of ACLS / Axcelis Technologies, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 8,849 shares of Axcelis Technologies, Inc. (US:ACLS) valued at $823,665 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 9,012 shares of Axcelis Technologies, Inc.. The current value of the position is $1,408,672 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.

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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)
2026-05-08 2026-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 8,849 -163 -1.81 1 0.0063
2026-02-05 2025-12-31 13F AXCELIS TECHNOLOGIES COM 054540208 9,012 -60 -0.66 1 0.0052
2025-10-29 2025-09-30 13F AXCELIS TECHNOLOGIES COM 054540208 9,072 -118 -1.28 1 0.0063
2025-08-04 2025-06-30 13F AXCELIS TECHNOLOGIES COM 054540208 9,190 -119 -1.28 1 0.0049
2025-04-25 2025-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 9,309 -294 -3.06 0 0.0040
2025-02-04 2024-12-31 13F AXCELIS TECHNOLOGIES COM 054540208 9,603 0 0.00 1 -100.00 0.0055
2024-10-30 2024-09-30 13F AXCELIS TECHNOLOGIES COM 054540208 9,603 -340 -3.42 1 0.00 0.0083
2024-08-12 2024-06-30 13F AXCELIS TECHNOLOGIES COM 054540208 9,943 -421 -4.06 1 0.00 0.0120
2024-04-23 2024-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 10,364 -3,639 -25.99 1 0.00 0.0099
2024-02-06 2023-12-31 13F AXCELIS TECHNOLOGIES COM 054540208 14,003 -665 -4.53 2 -50.00 0.0145
2023-11-08 2023-09-30 13F AXCELIS TECHNOLOGIES COM 054540208 14,668 -178 -1.20 2 0.00 0.0204
2023-08-11 2023-06-30 13F AXCELIS TECHNOLOGIES COM 054540208 14,846 -173 -1.15 3 0.00 0.0220
2023-05-02 2023-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 15,019 -1,053 -6.55 2 100.00 0.0171
2023-02-10 2022-12-31 13F AXCELIS TECHNOLOGIES COM 054540208 16,072 78 0.49 1 -99.90 0.0114
2022-11-09 2022-09-30 13F AXCELIS TECHNOLOGIES COM 054540208 15,994 144 0.91 969 11.51 0.0094
2022-08-15 2022-06-30 13F AXCELIS TECHNOLOGIES COM 054540208 15,850 -389 -2.40 869 -29.18 0.0081
2022-08-25 2022-03-31 13F/A-1 AXCELIS TECHNOLOGIES COM 054540208 16,239 -1,014 -5.88 1,227 -4.59 0.0095
2022-06-30 2022-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 16,239 -1,014 1,227 0.0097
2022-02-15 2021-12-31 13F/A-1 AXCELIS TECHNOLOGIES COM 054540208 17,253 -247 -1.41 1,286 56.26 0.0095
2022-02-15 2021-12-31 13F AXCELIS TECHNOLOGIES COM 054540208 17,253 -247 1,286 0.0095
2021-10-29 2021-09-30 13F AXCELIS TECHNOLOGIES COM 054540208 17,500 -365 -2.04 823 13.99 0.0069
2021-08-16 2021-06-30 13F AXCELIS TECHNOLOGIES COM 054540208 17,865 12,997 266.99 722 261.00 0.0058
2021-05-13 2021-03-31 13F AXCELIS TECHNOLOGIES COM 054540208 4,868 4,868 200 0.0075
2016-08-16 2016-06-30 13F AXCELIS TECHNOLOGIES COM 054540109 0 -12,234 -100.00 0 -100.00
2016-05-11 2016-03-31 13F AXCELIS TECHNOLOGIES COM 054540109 12,234 1,208 10.96 34 17.24 0.0033
2016-02-10 2015-12-31 13F AXCELIS TECHNOLOGIES COM 054540109 11,026 -796 -6.73 29 -9.37 0.0036
2015-11-04 2015-09-30 13F AXCELIS TECHNOLOGIES COM 054540109 11,822 107 0.91 32 -8.57 0.0034
2015-07-10 2015-06-30 13F AXCELIS TECHNOLOGIES COM 054540109 11,715 11,715 35 0.0034
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.