Axcelis Technologies, Inc.
MX ˙ BMV ˙ US0545402085
SecurityMX:ACLS / Axcelis Technologies, Inc.
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership210,202 shares
Latest Disclosed Value $ 19,565,602
Principal Financial Group Inc reports 5.09% increase in ownership of ACLS / Axcelis Technologies, Inc.

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 210,202 shares of Axcelis Technologies, Inc. (MX:ACLS) valued at $19,565,602 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 200,025 shares of Axcelis Technologies, Inc.. This represents a change in shares of 5.09% during the quarter.

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)
2026-05-04 2026-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 210,202 10,177 5.09 19,566 21.75 0.0104
2026-02-02 2025-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 200,025 14,757 7.97 16,070 -11.16 0.0082
2025-11-04 2025-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 185,268 -20,409 -9.92 18,090 26.21 0.0091
2025-08-08 2025-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 205,677 11,639 6.00 14,334 48.73 0.0076
2025-04-28 2025-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 194,038 5,479 2.91 9,638 -26.85 0.0054
2025-01-31 2024-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 188,559 7,476 4.13 13,175 -30.61 0.0072
2024-10-31 2024-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 181,083 -30,476 -14.41 18,987 -36.88 0.0105
2024-07-29 2024-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 211,559 14,886 7.57 30,082 37.16 0.0179
2024-04-29 2024-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 196,673 4,410 2.29 21,933 -12.04 0.0129
2024-02-07 2023-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 192,263 928 0.49 24,935 -20.08 0.0159
2023-11-02 2023-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 191,335 -24,089 -11.18 31,197 -21.01 0.0224
2023-08-07 2023-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 215,424 7,702 3.71 39,494 42.69 0.0270
2023-05-09 2023-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 207,722 -6,872 -3.20 27,679 62.52 0.0198
2023-02-09 2022-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 214,594 2,718 1.28 17,030 32.73 0.0128
2022-11-09 2022-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 211,876 -14,292 -6.32 12,831 3.45 0.0102
2022-08-10 2022-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 226,168 214,200 1,789.77 12,403 1,272.01 0.0092
2022-05-09 2022-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 11,968 -215,476 -94.74 904 -94.67 0.0004
2022-05-09 2022-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 225,836 17,057
2022-02-09 2021-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 227,444 -8,518 -3.61 16,958 52.82 0.0101
2021-11-09 2021-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 235,962 -1,864 -0.78 11,097 15.44 0.0072
2021-08-10 2021-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 237,826 -865 -0.36 9,613 -1.99 0.0062
2021-05-10 2021-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 238,691 318 0.13 9,808 41.31 0.0069
2021-02-23 2020-12-31 13F/A-1 AXCELIS TECHNOLOGIES COM NEW 054540208 238,373 -996 -0.42 6,941 31.81 0.0051
2021-02-08 2020-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 238,373 -996 6,941 2,730.6964
2020-11-06 2020-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 239,369 -6,171 -2.51 5,266 -22.99 0.0044
2020-08-05 2020-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 245,540 -431 -0.18 6,838 51.82 0.0061
2020-05-12 2020-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 245,971 -10,173 -3.97 4,504 -27.03 0.0050
2020-02-05 2019-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 256,144 1,131 0.44 6,172 41.62 0.0051
2019-11-13 2019-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 255,013 -9,187 -3.48 4,358 9.61 0.0038
2019-08-12 2019-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 264,200 2,561 0.98 3,976 -24.47 0.0036
2019-05-10 2019-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 261,639 -1,501 -0.57 5,264 12.38 0.0049
2019-02-14 2018-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 263,140 -15,104 -5.43 4,684 -14.32 0.0050
2018-11-14 2018-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 278,244 11,061 4.14 5,467 3.35 0.0048
2018-08-13 2018-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 267,183 7,080 2.72 5,290 -17.33 0.0049
2018-05-14 2018-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 260,103 11,939 4.81 6,399 -10.15 0.0061
2018-02-12 2017-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 248,164 248,164 7,122 0.0066
2016-11-10 2016-09-30 13F AXCELIS TECHNOLOGIES COM 054540109 0 -21,212 -100.00 0 -100.00
2016-08-09 2016-06-30 13F AXCELIS TECHNOLOGIES COM 054540109 21,212 -1,574 -6.91 57 -10.94 0.0001
2016-05-10 2016-03-31 13F AXCELIS TECHNOLOGIES COM 054540109 22,786 2,020 9.73 64 18.52 0.0001
2016-02-09 2015-12-31 13F AXCELIS TECHNOLOGIES COM 054540109 20,766 -89 -0.43 54 -3.57 0.0001
2015-11-12 2015-09-30 13F/A-1 AXCELIS TECHNOLOGIES COM 054540109 20,855 20,855 56 0.0001
2015-11-09 2015-09-30 13F AXCELIS TECHNOLOGIES COM 054540109 20,855 56 0.0001
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.