Position in ONTO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$12,159,598
+$6,615,156 QoQ
Shares Held
32,130
-25.1% QoQ
Ownership
0.065%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#157
of 686 holders
Holding Since
Dec 2022
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ONTO Over Time
Shares Held
Position Value (USD)
Position in Semiconductor Equipment & Materials
Technology · as of Jun 30, 2026Weiss Asset Management LP holds $60,404,243 across 8 Semiconductor Equipment & Materials names. ONTO ranks #3 (20.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ACLS |
Axcelis Technologies Inc
|
103,258 | $19,562,228 | |
| 2 | FORM |
Formfactor Inc
|
81,760 | $13,075,876 | |
| 3 | ONTO |
Onto Innovation Inc.
This page
|
32,130 | $12,159,598 | |
| 4 | AMKR |
Amkor Technology, Inc.
|
57,720 | $4,977,195 | |
| 5 | KLIC |
Kulicke & Soffa Industries Inc
|
35,559 | $4,756,371 | |
| 6 | UCTT |
Ultra Clean Holdings, Inc.
|
22,854 | $3,258,751 | |
| 7 | COHU |
Cohu Inc
|
23,834 | $1,761,570 | |
| 8 | ICHR |
Ichor Holdings, Ltd.
|
7,594 | $852,654 |
All Filings in ONTO
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $12,159,598 | 32,130 | Shares | Defined | 2026-08-14 | |
| 2025-09-30 | $5,544,442 | 42,907 | Shares | Defined | 2025-11-14 | |
| 2023-12-31 | $12,753,694 | 83,412 | Shares | Defined | 2024-02-12 | |
| 2023-09-30 | $14,027,200 | 110,000 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $23,879,960 | 205,031 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $14,056,142 | 159,947 | Shares | Defined | 2023-05-10 | |
| 2022-12-31 | $5,106,750 | 75,000 | Shares | Defined | 2023-02-14 | |
| No filing history on record for this holder in this stock. | ||||||