STATE OF WISCONSIN INVESTMENT BOARD
Position in ACLS — Axcelis Technologies Inc
CIK 854157
MADISON, WI
Position in ACLS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$3,835,547
-$222,105 QoQ
Shares Held
41,207
-18.4% QoQ
Ownership
0.134%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ACLS Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Mar 31, 2026STATE OF WISCONSIN INVESTMENT BOARD holds $504,357,957 across 21 Semiconductor Equipment & Materials names. ACLS ranks #11 (0.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LRCX |
Lam Research Corp
|
714,596 | $152,680,581 | |
| 2 | AMAT |
Applied Materials Inc /De
|
430,459 | $147,126,581 | |
| 3 | KLAC |
Kla Corp
|
76,198 | $112,194,697 | |
| 4 | TER |
Teradyne, Inc
|
102,490 | $30,384,185 | |
| 5 | ONTO |
Onto Innovation Inc.
|
63,331 | $12,987,288 | |
| 6 | Q |
Qnity Electronics, Inc.
|
112,179 | $12,943,213 | |
| 7 | ENTG |
Entegris Inc
|
79,043 | $9,267,001 | |
| 8 | FORM |
Formfactor Inc
|
54,861 | $5,320,968 |
All Filings in ACLS
Export CSV
23 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,835,547 | 41,207 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $4,057,652 | 50,506 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $4,902,894 | 50,214 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $6,312,032 | 90,573 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $3,897,455 | 78,467 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $3,755,512 | 53,750 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $4,737,332 | 45,182 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $8,527,845 | 59,975 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $6,578,564 | 58,990 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $5,609,740 | 43,255 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $6,903,863 | 42,342 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $7,259,684 | 39,599 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $5,789,712 | 43,450 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $3,993,157 | 50,317 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $3,170,437 | 52,352 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $3,078,278 | 56,132 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $6,427,603 | 85,100 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $6,844,608 | 91,800 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $3,691,855 | 78,500 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $2,841,526 | 70,300 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $3,205,020 | 78,000 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $2,287,725 | 78,562 | Shares | Sole | 2021-02-03 | |
| 2020-09-30 | $325,600 | 14,800 | Shares | Sole | 2020-11-16 | |
| No filing history on record for this holder in this stock. | ||||||