Axcelis Technologies, Inc.
US ˙ NasdaqGS ˙ US0545402085

SecurityACLS / Axcelis Technologies, Inc.
InstitutionClark Capital Management Group, Inc.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Clark Capital Management Group, Inc. closes position in ACLS / Axcelis Technologies, Inc.

On May 15, 2026 - Clark Capital Management Group, Inc. filed a 13F-HR form disclosing ownership of 0 shares of Axcelis Technologies, Inc. (US:ACLS) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 110,294 shares of Axcelis Technologies, Inc.. The current value of the position is $0 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 AXCELIS TECHNOLOGIES COM NEW 054540208 0 -100.00 0
2026-02-17 2025-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 110,294 13,706 14.19 8,861 -6.03 0.0544
2025-11-14 2025-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 96,588 11,997 14.18 9,431 59.97 0.0591
2025-08-14 2025-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 84,591 84,591 5,895 0.0409
2024-11-14 2024-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 0 -201,990 -100.00 0 -100.00
2024-08-14 2024-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 201,990 -13,969 -6.47 28,721 19.25 0.2111
2024-05-15 2024-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 215,959 -56,515 -20.74 24,084 -31.85 0.1794
2024-02-14 2023-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 272,474 243,745 848.43 35,337 654.42 0.2892
2023-11-14 2023-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 28,729 -7,600 -20.92 4,684 -29.67 0.0469
2023-08-14 2023-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 36,329 100 0.28 6,660 37.97 0.0595
2023-05-15 2023-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 36,229 331 0.92 4,828 69.49 0.0540
2023-02-14 2022-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 35,898 -12,168 -25.32 2,849 -2.16 0.0262
2022-11-14 2022-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 48,066 939 1.99 2,911 12.65 0.0382
2022-08-15 2022-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 47,127 5,228 12.48 2,584 -18.36 0.0339
2022-05-16 2022-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 41,899 16,900 67.60 3,165 69.80 0.0354
2022-02-14 2021-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 24,999 24,999 1,864 0.0229
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.