액셀리스 테크놀로지스, Inc.
MX ˙ BMV ˙ US0545402085
SecurityMX:ACLS / Axcelis Technologies, Inc.
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership888 shares
Latest Disclosed Value $ 82,655
Rockefeller Capital Management L.P. reports 34.56% decrease in ownership of ACLS / Axcelis Technologies, Inc.

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 888 shares of Axcelis Technologies, Inc. (MX:ACLS) valued at $82,655 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 1,357 shares of Axcelis Technologies, Inc.. This represents a change in shares of -34.56% 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)
2026-05-14 2026-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 888 -469 -34.56 83 -24.77 0.0001
2026-03-16 2025-12-31 13F/A-1 AXCELIS TECHNOLOGIES COM NEW 054540208 1,357 555 69.20 109 39.74 0.0002
2026-02-14 2025-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 1,357 555 109 0.0001
2025-11-14 2025-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 802 802 78 0.0002
2025-08-14 2025-06-30 13F/A-1 AXCELIS TECHNOLOGIES COM NEW 054540208 0 -15,055 -100.00 0 -100.00
2025-08-08 2025-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 0 0
2025-05-14 2025-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 15,055 -3,033 -16.77 748 -40.86 0.0018
2025-02-13 2024-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 18,088 18,088 1,264 0.0033
2024-08-12 2024-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 0 -64,190 -100.00 0 -100.00
2024-05-14 2024-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 64,190 -824 -1.27 7,158 -15.10 0.0209
2024-02-14 2023-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 65,014 23,010 54.78 8,432 23.12 0.0282
2023-11-14 2023-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 42,004 14,483 52.63 6,849 35.74 0.0264
2023-08-14 2023-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 27,521 27,521 5,045 0.0195
2023-05-17 2023-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 0 -174 -100.00 0 -100.00
2023-03-06 2022-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 174 0 0.00 13 30.00 0.0001
2022-11-02 2022-09-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 174 -68 -28.10 10 -23.08 0.0001
2022-08-12 2022-06-30 13F AXCELIS TECHNOLOGIES COM NEW 054540208 242 242 13 0.0001
2022-05-13 2022-03-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 0 -7 -100.00 0 0.0000
2022-02-14 2021-12-31 13F AXCELIS TECHNOLOGIES COM NEW 054540208 7 7 0 0.0000
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.