Position in ONTO
as of Jun 30, 2026
· filed Jul 28, 2026
Position Value
$55,707,840
+$32,186,311 QoQ
Shares Held
147,200
+28.3% QoQ
Ownership
0.300%
of shares outstanding
% of Portfolio
0.89%
of 13F equity value
Holder Rank
#73
of 688 holders
Holding Since
Sep 2020
24 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, 2026Robeco Schweiz AG holds $144,757,918 across 4 Semiconductor Equipment & Materials names. ONTO ranks #2 (38.5% of the industry book) .
All Filings in ONTO
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24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $55,707,840 | 147,200 | Shares | Sole | 2026-07-28 | |
| 2026-03-31 | $23,521,529 | 114,700 | Shares | Sole | 2026-05-07 | |
| 2025-12-31 | $22,100,400 | 140,000 | Shares | Sole | 2026-02-03 | |
| 2025-09-30 | $19,629,810 | 151,910 | Shares | Defined | 2025-10-27 | |
| 2025-06-30 | $13,313,676 | 131,910 | Shares | Defined | 2025-08-07 | |
| 2025-03-31 | $16,005,959 | 131,910 | Shares | Defined | 2025-04-30 | |
| 2024-12-31 | $27,143,876 | 162,860 | Shares | Defined | 2025-02-05 | |
| 2024-09-30 | $35,438,794 | 170,740 | Shares | Defined | 2024-11-04 | |
| 2024-06-30 | $41,439,754 | 188,740 | Shares | Defined | 2024-08-08 | |
| 2024-03-31 | $41,999,695 | 231,940 | Shares | Defined | 2024-04-25 | |
| 2023-12-31 | $59,936,800 | 392,000 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $66,692,960 | 523,000 | Shares | Defined | 2023-11-08 | |
| 2023-06-30 | $74,540,800 | 640,000 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $56,243,200 | 640,000 | Shares | Defined | 2023-05-08 | |
| 2022-12-31 | $43,577,600 | 640,000 | Shares | Defined | 2023-02-07 | |
| 2022-09-30 | $41,907,786 | 654,298 | Shares | Sole | 2022-11-10 | |
| 2022-06-30 | $78,806,200 | 1,130,000 | Shares | Sole | 2022-08-03 | |
| 2022-03-31 | $112,957,000 | 1,300,000 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $119,451,400 | 1,180,000 | Shares | Sole | 2022-02-08 | |
| 2021-09-30 | $88,506,250 | 1,225,000 | Shares | Sole | 2021-10-13 | |
| 2021-06-30 | $69,388,000 | 950,000 | Shares | Sole | 2021-07-15 | |
| 2021-03-31 | $57,496,250 | 875,000 | Shares | Sole | 2021-05-04 | |
| 2020-12-31 | $25,677,000 | 540,000 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $13,401,000 | 450,000 | Shares | Sole | 2020-10-13 | |
| No filing history on record for this holder in this stock. | ||||||