Onto Innovation Inc.
US ˙ NYSE ˙ US6833441057

SecurityONTO / Onto Innovation Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership43,176 shares
Latest Disclosed Value $ 6,815,982
Sei Investments Co reports 130.54% increase in ownership of ONTO / Onto Innovation Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 43,176 shares of Onto Innovation Inc. (US:ONTO) valued at $6,815,763 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 18,728 shares of Onto Innovation Inc.. This represents a change in shares of 130.54% during the quarter. The current value of the position is $12,088,416 USD.

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)
2026-02-13 2025-12-31 13F ONTO INNOVATION COM 683344105 43,176 24,448 130.54 6,816 181.61 0.0067
2025-11-13 2025-09-30 13F ONTO INNOVATION COM 683344105 18,728 -6,257 -25.04 2,420 -4.01 0.0026
2025-08-14 2025-06-30 13F ONTO INNOVATION COM 683344105 24,985 -67,336 -72.94 2,522 -77.50 0.0029
2025-05-14 2025-03-31 13F/A-1 ONTO INNOVATION COM 683344105 92,321 -111,858 -54.78 11,202 -67.08 0.0144
2025-05-13 2025-03-31 13F ONTO INNOVATION COM 683344105 195,814 -8,365 32,167 0.0350
2025-02-11 2024-12-31 13F ONTO INNOVATION COM 683344105 204,179 8,086 4.12 34,031 -16.39 0.0437
2024-11-12 2024-09-30 13F ONTO INNOVATION COM 683344105 196,093 17,109 9.56 40,701 3.57 0.0529
2024-08-13 2024-06-30 13F ONTO INNOVATION COM 683344105 178,984 35,356 24.62 39,298 51.11 0.0557
2024-05-07 2024-03-31 13F ONTO INNOVATION COM 683344105 143,628 18,843 15.10 26,008 36.31 0.0381
2024-02-14 2023-12-31 13F ONTO INNOVATION COM 683344105 124,785 20,415 19.56 19,080 43.35 0.0306
2023-11-14 2023-09-30 13F ONTO INNOVATION COM 683344105 104,370 -4,432 -4.07 13,310 5.03 0.0239
2023-08-11 2023-06-30 13F ONTO INNOVATION COM 683344105 108,802 6,617 6.48 12,672 41.11 0.0221
2023-05-12 2023-03-31 13F ONTO INNOVATION COM 683344105 102,185 2,772 2.79 8,980 32.66 0.0167
2023-02-10 2022-12-31 13F ONTO INNOVATION COM 683344105 99,413 -14,122 -12.44 6,769 -6.92 0.0150
2022-11-14 2022-09-30 13F ONTO INNOVATION COM 683344105 113,535 28,351 33.28 7,272 22.73 0.0162
2022-08-15 2022-06-30 13F ONTO INNOVATION COM 683344105 85,184 11,088 14.96 5,925 -7.85 0.0128
2022-05-13 2022-03-31 13F ONTO INNOVATION COM 683344105 74,096 902 1.23 6,430 -13.34 0.0129
2022-02-14 2021-12-31 13F ONTO INNOVATION COM 683344105 73,194 -20,011 -21.47 7,420 10.25 0.0139
2021-11-12 2021-09-30 13F ONTO INNOVATION COM 683344105 93,205 30,374 48.34 6,730 45.92 0.0141
2021-08-06 2021-06-30 13F ONTO INNOVATION COM 683344105 62,831 17,649 39.06 4,612 55.34 0.0102
2021-05-12 2021-03-31 13F ONTO INNOVATION COM 683344105 45,182 5,848 14.87 2,969 58.77 0.0075
2021-02-08 2020-12-31 13F ONTO INNOVATION COM 683344105 39,334 14,396 57.73 1,870 151.68 0.0048
2020-12-04 2020-09-30 13F/A-1 ONTO INNOVATION COM 683344105 24,938 -3,111 -11.09 743 -22.20 0.0022
2020-11-06 2020-09-30 13F ONTO INNOVATION COM 683344105 27,277 -772 813 1,957.5232
2020-08-17 2020-06-30 13F/A-1 ONTO INNOVATION COM 683344105 28,049 110 0.39 955 15.34 0.0030
2020-08-11 2020-06-30 13F ONTO INNOVATION COM 683344105 27,128 -811 986 2,674.5775
2020-05-14 2020-03-31 13F ONTO INNOVATION COM 683344105 27,939 27,939 828 0.0030
2020-02-06 2019-12-31 13F NANOMETRICS COM 630077105 0 -29,450 -100.00 0 -100.00
2019-11-12 2019-09-30 13F NANOMETRICS COM 630077105 29,450 -18,198 -38.19 961 -41.86 0.0025
2019-08-14 2019-06-30 13F NANOMETRICS COM 630077105 47,648 24,377 104.75 1,653 130.22 0.0054
2019-05-15 2019-03-31 13F NANOMETRICS COM 630077105 23,271 19,853 580.84 718 655.79 0.0024
2019-02-13 2018-12-31 13F NANOMETRICS COM 630077105 3,418 -269 -7.30 95 13.10 0.0003
2018-11-08 2018-09-30 13F NANOMETRICS COM 630077105 3,687 28 0.77 84 -34.88 0.0003
2018-08-03 2018-06-30 13F NANOMETRICS COM 630077105 3,659 3,631 12,967.86 129 12,800.00 0.0004
2018-05-11 2018-03-31 13F NANOMETRICS COM 630077105 28 0 0.00 1 0.00 0.0000
2018-02-08 2017-12-31 13F NANOMETRICS COM 630077105 28 0 0.00 1 0.00 0.0000
2017-11-06 2017-09-30 13F NANOMETRICS COM 630077105 28 0 0.00 1 0.00 0.0000
2017-07-31 2017-06-30 13F NANOMETRICS COM 630077105 28 28 1 0.0000
2015-10-30 2015-09-30 13F NANOMETRICS COM 630077105 0 -9,137 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 NANOMETRICS COM 630077105 9,137 861 10.40 147 5.76 0.0013
2015-08-04 2015-06-30 13F NANOMETRICS COM 630077105 9,137 861 147 0.0013
2015-05-14 2015-03-31 13F/A-1 NANOMETRICS COM 630077105 8,276 -1,388 -14.36 139 -14.72 0.0012
2015-05-01 2015-03-31 13F NV5 HLDGS COM 630077105 8,276 139
2015-02-10 2014-12-31 13F NANOMETRICS COM 630077105 9,664 9,664 163 0.0014
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.