Position in ONTO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$12,987,288
+$2,423,929 QoQ
Shares Held
63,331
-5.4% QoQ
Ownership
0.127%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ONTO Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Mar 31, 2026STATE OF WISCONSIN INVESTMENT BOARD holds $403,382,729 across 21 Semiconductor Equipment & Materials names. ONTO ranks #4 (3.2% 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 | TER |
Teradyne, Inc
|
102,490 | $30,384,185 | |
| 4 | ONTO |
Onto Innovation Inc.
This page
|
63,331 | $12,987,288 | |
| 5 | Q |
Qnity Electronics, Inc.
|
112,179 | $12,943,213 | |
| 6 | KLAC |
Kla Corp
|
76,198 | $11,219,469 | |
| 7 | ENTG |
Entegris Inc
|
79,043 | $9,267,001 | |
| 8 | FORM |
Formfactor Inc
|
54,861 | $5,320,968 |
All Filings in ONTO
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $12,987,288 | 63,331 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $10,563,359 | 66,916 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $7,912,786 | 61,235 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $6,184,485 | 61,275 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $7,941,096 | 65,445 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $9,963,199 | 59,778 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $10,938,412 | 52,700 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $11,888,734 | 54,148 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $10,525,275 | 58,125 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $10,149,502 | 66,380 | Shares | Sole | 2024-02-12 | |
| 2023-09-30 | $8,294,283 | 65,043 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $8,405,406 | 72,168 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $7,227,426 | 82,242 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $6,284,230 | 92,293 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $6,106,334 | 95,337 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $6,863,601 | 98,417 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $14,501,941 | 166,900 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $17,290,084 | 170,800 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $12,311,400 | 170,400 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $12,774,696 | 174,900 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $11,354,688 | 172,800 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $8,216,640 | 172,800 | Shares | Sole | 2021-02-03 | |
| 2020-09-30 | $6,530,754 | 219,300 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $7,464,972 | 219,300 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $6,506,631 | 219,300 | Shares | Sole | 2020-05-06 | |
| No filing history on record for this holder in this stock. | ||||||