Axcelis Technologies, Inc.
MX ˙ BMV ˙ US0545402085
SecurityMX:ACLS / Axcelis Technologies, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership144,678 shares
Latest Disclosed Value $ 13,466,628
Bnp Paribas Arbitrage, Sa reports 11.80% decrease in ownership of ACLS / Axcelis Technologies, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 144,678 shares of Axcelis Technologies, Inc. (MX:ACLS) valued at $13,466,628 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 164,027 shares of Axcelis Technologies, Inc.. This represents a change in shares of -11.80% 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.

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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)
2026-05-12 2026-03-31 13F Axcelis Technologies Equity 054540208 144,678 -19,349 -11.80 13,467 2.19 0.0007
2026-02-10 2025-12-31 13F Axcelis Technologies Equity 054540208 164,027 -119,899 -42.23 13,178 -52.47 0.0060
2025-11-13 2025-09-30 13F Axcelis Technologies Equity 054540208 283,926 91,738 47.73 27,723 106.99 0.0148
2025-08-14 2025-06-30 13F Axcelis Technologies Equity 054540208 192,188 57,106 42.28 13,394 99.63 0.0077
2025-05-14 2025-03-31 13F Axcelis Technologies Equity 054540208 135,082 18,792 16.16 6,710 -17.43 0.0039
2025-02-14 2024-12-31 13F Axcelis Technologies Equity 054540208 116,290 87,602 305.36 8,125 170.20 0.0046
2024-11-13 2024-09-30 13F Axcelis Technologies Equity 054540208 28,688 -25,597 -47.15 3,008 -61.04 0.0020
2024-08-13 2024-06-30 13F Axcelis Technologies Equity 054540208 54,285 -73,665 -57.57 7,719 -45.91 0.0063
2024-05-01 2024-03-31 13F Axcelis Technologies Equity 054540208 127,950 25,228 24.56 14,269 7.10 0.0125
2024-02-14 2023-12-31 13F/A-2 Axcelis Technologies Equity 054540208 102,722 6,981 7.29 13,322 -14.66 0.0151
2024-02-07 2023-12-31 13F/A-1 Axcelis Technologies Equity 054540208 102,722 6,981 13,322 0.0019
2024-02-07 2023-12-31 13F Axcelis Technologies Equity 054540208 102,722 13,322
2023-11-14 2023-09-30 13F Axcelis Technologies Equity 054540208 95,741 75,884 382.15 15,611 328.85 0.0201
2023-08-09 2023-06-30 13F Axcelis Technologies Equity 054540208 19,857 -13,542 -40.55 3,640 -18.20 0.0046
2023-05-12 2023-03-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 33,399 23,058 222.98 4,450 442.68 0.0062
2023-02-14 2022-12-31 13F Axcelis Technologies Equity 054540208 10,341 -9,583 -48.10 821 -32.01 0.0013
2022-11-16 2022-09-30 13F/A-1 Axcelis Technologies Equity 054540208 19,924 9,473 90.64 1,207 110.47 0.0019
2022-11-15 2022-09-30 13F Axcelis Technologies Equity 054540208 19,924 9,473 1,207 0.0003
2022-08-12 2022-06-30 13F Axcelis Technologies Equity 054540208 10,451 865 9.02 573 -20.86 0.0009
2022-05-18 2022-03-31 13F/A-1 Axcelis Technologies Equity 054540208 9,586 -6,973 -42.11 724 -41.33 0.0010
2022-02-09 2021-12-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 16,559 -18,110 -52.24 1,235 -24.29 0.0018
2021-11-16 2021-09-30 13F/A-1 AXCELIS TECHNOLOGIES EQUITY 054540208 34,669 22,803 192.17 1,630 240.29 0.0023
2021-11-12 2021-09-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 8,396 -3,470 185 0.0000
2021-08-10 2021-06-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 11,866 3,505 41.92 480 39.65 0.0006
2021-05-07 2021-03-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 8,361 131 1.59 344 43.51 0.0005
2021-02-10 2020-12-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 8,230 -166 -1.98 240 29.89 0.0004
2020-10-30 2020-09-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 8,396 6,491 340.73 185 247.17 0.0003
2020-08-06 2020-06-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 1,905 -10,999 -85.24 53 -77.54 0.0001
2020-05-13 2020-03-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 12,904 1,488 13.03 236 -14.18 0.0005
2020-02-12 2019-12-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 11,416 6,204 119.03 275 208.99 0.0005
2019-11-07 2019-09-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 5,212 -152 -2.83 89 11.25 0.0002
2019-07-30 2019-06-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 5,364 -1,428 -21.02 81 -41.18 0.0002
2019-04-25 2019-03-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 6,792 5,554 448.63 137 518.18 0.0003
2019-02-12 2018-12-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 1,238 -2,873 -69.89 22 -72.50 0.0001
2018-11-07 2018-09-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 4,111 700 20.52 81 19.40 0.0001
2018-07-25 2018-06-30 13F AXCELIS TECHNOLOGIES EQUITY 054540208 3,411 -7,597 -69.01 68 -75.19 0.0001
2018-05-11 2018-03-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 11,008 -1,680 -13.24 271 -25.82 0.0005
2018-03-05 2017-12-31 13F/A-1 AXCELIS TECHNOLOGIES EQUITY 054540208 12,688 -30,416 -70.56 364 -69.10 0.0006
2018-02-01 2017-12-31 13F AXCELIS TECHNOLOGIES EQUITY 054540208 12,688 -30,416 364
2017-11-03 2017-09-30 13F AXCELIS TECHNOLOGIES STOCK 054540208 43,104 -24,719 -36.45 1,179 -17.04 0.0029
2017-08-03 2017-06-30 13F AXCELIS TECHNOLOGIES STOCK 054540208 67,823 67,711 60,456.25 1,421 70,900.00 0.0043
2017-05-03 2017-03-31 13F AXCELIS TECHNOLOGIES STOCK 054540208 112 -1,517 -93.12 2 -91.30 0.0000
2017-02-14 2016-12-31 13F AXCELIS TECHNOLOGIES STOCK 054540208 1,629 -434 -21.04 24 -14.81 0.0001
2016-10-05 2016-09-30 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540208 2,063 -2,446 -54.25 27 125.00 0.0001
2016-07-06 2016-06-30 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 4,509 4,509 0.00 12 0.0001
2016-04-22 2016-03-31 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 0 -10,832 -100.00 0 -100.00
2016-04-19 2015-12-31 13F/A-1 * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 10,832 -13,161 -54.85 28 -56.25 0.0001
2016-02-10 2015-12-31 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 10,832 28
2015-11-13 2015-09-30 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 23,993 14,548 154.03 64 137.04 0.0002
2015-08-14 2015-06-30 13F AXCELIS TECHNOLOGIES INC COM STOCK 054540109 9,445 6,805 257.77 28 350.00 0.0001
2015-05-15 2015-03-31 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 2,640 2,640 0.00 6 0.0000
2015-02-11 2014-12-31 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 0 -6,674 -100.00 0 -100.00
2014-11-12 2014-09-30 13F * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 6,674 5,727 604.75 13 1,200.00 0.0000
2014-08-14 2014-06-30 13F/A-1 * AXCELIS TECHNOLOGIES INC COM STOCK 054540109 947 -458 -32.60 2 -66.67 0.0000
2014-08-14 2014-06-30 13F AXCELIS TECHNOLOGIES INC COM STOCK 054540109 947 2
2014-04-02 2013-12-31 13F/A-1 AXCELIS TECHNOLOGIES STOCK 054540109 1,405 -28,427 -95.29 3 -95.16 0.0000
2013-11-13 2013-09-30 13F AXCELIS TECHNOLOGIES STOCK 054540109 29,832 -8,596 -22.37 63 -10.14 0.0000
2013-08-13 2013-06-30 13F AXCELIS TECHNOLOGIES STOCK 054540109 38,428 38,428 70 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.