ON Semiconductor Corporation
MX ˙ BMV ˙ US6821891057
SecurityMX:ON / ON Semiconductor Corporation
InstitutionEarnest Partners Llc
Latest Disclosed Ownership2,362,156 shares
Latest Disclosed Value $ 146,264,700
Earnest Partners Llc reports 1.27% decrease in ownership of ON / ON Semiconductor Corporation

On May 15, 2026 - Earnest Partners Llc filed a 13F-HR form disclosing ownership of 2,362,156 shares of ON Semiconductor Corporation (MX:ON) valued at $146,264,700 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,392,529 shares of ON Semiconductor Corporation. This represents a change in shares of -1.27% during the quarter.

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)
2026-05-15 2026-03-31 13F ON SEMICONDUCTOR COM 682189105 2,362,156 -30,373 -1.27 146,265 12.90 0.6031
2026-02-12 2025-12-31 13F ON SEMICONDUCTOR COM 682189105 2,392,529 354,020 17.37 129,555 28.89 0.5552
2025-11-14 2025-09-30 13F ON SEMICONDUCTOR COM 682189105 2,038,509 -1,197 -0.06 100,519 -5.97 0.4361
2025-08-15 2025-06-30 13F ON SEMICONDUCTOR COM 682189105 2,039,706 39,118 1.96 106,901 31.32 0.4819
2025-05-14 2025-03-31 13F ON SEMICONDUCTOR COM 682189105 2,000,588 -33,326 -1.64 81,404 -36.52 0.3898
2025-02-14 2024-12-31 13F ON SEMICONDUCTOR COM 682189105 2,033,914 4,660 0.23 128,238 -12.97 0.5731
2024-11-14 2024-09-30 13F ON SEMICONDUCTOR COM 682189105 2,029,254 -16,588 -0.81 147,344 5.06 0.6416
2024-08-14 2024-06-30 13F ON SEMICONDUCTOR COM 682189105 2,045,842 -550,200 -21.19 140,242 -26.55 0.6557
2024-05-15 2024-03-31 13F ON SEMICONDUCTOR COM 682189105 2,596,042 161,987 6.66 190,939 -6.09 0.8742
2024-02-14 2023-12-31 13F ON SEMICONDUCTOR COM 682189105 2,434,055 335,171 15.97 203,317 4.22 1.0152
2023-11-14 2023-09-30 13F ON SEMICONDUCTOR COM 682189105 2,098,884 125,493 6.36 195,091 4.53 1.1252
2023-08-07 2023-06-30 13F ON SEMICONDUCTOR COM 682189105 1,973,391 -87,010 -4.22 186,643 10.04 1.0432
2023-05-15 2023-03-31 13F ON SEMICONDUCTOR COM 682189105 2,060,401 -286,286 -12.20 169,612 15.89 0.9810
2023-02-14 2022-12-31 13F ON SEMICONDUCTOR COM 682189105 2,346,687 -34,937 -1.47 146,363 -1.40 0.8971
2022-11-14 2022-09-30 13F ON SEMICONDUCTOR COM 682189105 2,381,624 -439,649 -15.58 148,447 4.59 0.9971
2022-08-12 2022-06-30 13F ON SEMICONDUCTOR COM 682189105 2,821,273 308,629 12.28 141,938 -9.78 0.9454
2022-05-16 2022-03-31 13F ON SEMICONDUCTOR COM 682189105 2,512,644 3,047 0.12 157,317 -7.71 0.9317
2022-02-07 2021-12-31 13F ON SEMICONDUCTOR COM 682189105 2,509,597 -71,939 -2.79 170,452 44.26 0.9832
2021-11-15 2021-09-30 13F ON SEMICONDUCTOR COM 682189105 2,581,536 88,010 3.53 118,157 23.79 0.7222
2021-08-16 2021-06-30 13F ON SEMICONDUCTOR COM 682189105 2,493,526 167,740 7.21 95,452 -1.37 0.5608
2021-05-17 2021-03-31 13F ON SEMICONDUCTOR COM 682189105 2,325,786 359,238 18.27 96,776 50.36 0.5781
2021-02-16 2020-12-31 13F ON SEMICONDUCTOR COM 682189105 1,966,548 324,992 19.80 64,365 80.78 0.4447
2020-11-16 2020-09-30 13F ON SEMICONDUCTOR COM 682189105 1,641,556 63,342 4.01 35,605 13.83 0.3072
2020-08-13 2020-06-30 13F ON SEMICONDUCTOR COM 682189105 1,578,214 339,351 27.39 31,280 102.97 0.2955
2020-05-14 2020-03-31 13F ON SEMICONDUCTOR COM 682189105 1,238,863 20,912 1.72 15,411 -48.10 0.1737
2020-02-07 2019-12-31 13F ON SEMICONDUCTOR COM 682189105 1,217,951 448,313 58.25 29,694 100.84 0.2334
2019-11-14 2019-09-30 13F ON SEMICONDUCTOR COM 682189105 769,638 37,940 5.19 14,785 -0.02 0.1336
2019-08-13 2019-06-30 13F ON SEMICONDUCTOR COM 682189105 731,698 -11,500 -1.55 14,788 -3.27 0.1336
2019-05-15 2019-03-31 13F ON SEMICONDUCTOR COM 682189105 743,198 55,810 8.12 15,288 34.71 0.1460
2019-02-14 2018-12-31 13F ON SEMICONDUCTOR COM 682189105 687,388 -22,203 -3.13 11,349 -13.22 0.1236
2018-11-14 2018-09-30 13F ON SEMICONDUCTOR COM 682189105 709,591 7,286 1.04 13,078 -16.25 0.1172
2018-08-13 2018-06-30 13F ON SEMICONDUCTOR COM 682189105 702,305 -18,268 -2.54 15,616 -11.40 0.1461
2018-05-15 2018-03-31 13F ON SEMICONDUCTOR COM 682189105 720,573 -33,461 -4.44 17,625 11.63 0.1667
2018-02-14 2017-12-31 13F ON SEMICONDUCTOR COM 682189105 754,034 -90,283 -10.69 15,789 1.24 0.1512
2017-11-14 2017-09-30 13F ON SEMICONDUCTOR COM 682189105 844,317 -9,088 -1.06 15,595 30.15 0.1554
2017-08-14 2017-06-30 13F ON SEMICONDUCTOR COM 682189105 853,405 -14,237 -1.64 11,982 -10.85 0.1259
2017-05-15 2017-03-31 13F ON SEMICONDUCTOR COM 682189105 867,642 61,735 7.66 13,440 30.70 0.1434
2017-02-14 2016-12-31 13F ON SEMICONDUCTOR COM 682189105 805,907 -151,374 -15.81 10,283 -12.81 0.1123
2016-11-14 2016-09-30 13F ON SEMICONDUCTOR COM 682189105 957,281 573 0.06 11,794 39.77 0.1237
2016-08-15 2016-06-30 13F ON SEMICONDUCTOR COM 682189105 956,708 -8,597 -0.89 8,438 -8.85 0.0916
2016-05-16 2016-03-31 13F ON SEMICONDUCTOR COM 682189105 965,305 -15,342 -1.56 9,257 -3.67 0.0970
2016-02-16 2015-12-31 13F ON SEMICONDUCTOR COM 682189105 980,647 -856,652 -46.63 9,610 -44.36 0.0980
2015-11-16 2015-09-30 13F ON SEMICONDUCTOR COM 682189105 1,837,299 -278,732 -13.17 17,271 -30.18 0.1697
2015-08-14 2015-06-30 13F ON SEMICONDUCTOR COM 682189105 2,116,031 -54,477 -2.51 24,736 -1.01 0.2161
2015-05-15 2015-03-31 13F ON SEMICONDUCTOR COM 682189105 2,170,508 -74,670 -3.33 24,989 9.87 0.2151
2015-02-17 2014-12-31 13F ON SEMICONDUCTOR COM 682189105 2,245,178 2,245,178 22,744 0.1867
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.