Fmr Llc ownership in ON / ON Semiconductor Corporation

ON Semiconductor Corporation

US ˙ NasdaqGS ˙ US6821891057

Security	ON / ON Semiconductor Corporation
Institution	Fmr Llc
Latest Disclosed Ownership	61,538,856 shares
Ownership	15.00%

2025-11-05 - Fmr Llc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 61,538,856 shares of ON Semiconductor Corporation (US:ON). This represents 15.0 percent ownership of the company. In their previous filing dated 2025-08-06 , Fmr Llc had reported owning 56,578,980 shares, indicating an increase of 8.77 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2025-11-05	2025-11-05	13G/A	56,578,980	61,538,856	8.77	15.00	11.11
2025-08-06	2025-08-06	13G/A	64,320,349	56,578,980	-12.04	13.50	-9.99
2024-11-12	2024-11-12	13G/A	57,494,526	64,320,349	11.87	15.00	12.48
2024-02-09	2024-02-09	13G/A	51,385,598	57,494,526	11.89	13.34	12.38
2023-02-09	2023-02-09	13G/A	45,778,072	51,385,598	12.25	11.87	12.52
2022-09-12	2022-09-12	13G/A	42,642,157	45,778,072	7.35	10.55	6.72
2022-02-09	2022-02-09	13G/A	41,710,674	42,642,157	2.23	9.88	-2.36
2021-02-08	2021-02-08	13G/A	41,484,761	41,710,674	0.54	10.12	0.50
2020-10-13	2020-10-13	13G/A	26,377,791	41,484,761	57.27	10.07	57.26
2020-02-07	2020-02-07	13G/A	33,021,054	26,377,791	-20.12	6.40	-18.10
2019-02-13	2019-02-13	13G/A	36,791,583	33,021,054	-10.25	7.82	-9.41
2018-02-13	2018-02-13	13G/A	26,168,341	36,791,583	40.60	8.63	37.55
2017-02-14	2017-02-14	13G		26,168,341		6.28
2014-02-14	2014-02-14	13G/A		18,297,888		4.12
2013-02-14	2013-02-14	13G/A		38,297,657		8.48
2012-02-14	2012-02-14	13G/A		61,384,450		13.43

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	ON SEMICONDUCTOR	COM	682189105	58,158,341	-1,213,771	-2.04	3,601,164	12.01	0.0377
2026-02-17	2025-12-31	13F	ON SEMICONDUCTOR	COM	682189105	59,372,112	-877,931	-1.46	3,215,000	8.22	0.1639
2025-11-13	2025-09-30	13F	ON SEMICONDUCTOR	COM	682189105	60,250,043	4,444,010	7.96	2,970,930	1.58	0.1545
2025-08-14	2025-06-30	13F	ON SEMICONDUCTOR	COM	682189105	55,806,033	-3,334,314	-5.64	2,924,794	21.54	0.1649
2025-05-12	2025-03-31	13F	ON SEMICONDUCTOR	COM	682189105	59,140,347	-2,809,954	-4.54	2,406,421	-38.39	0.1536
2025-02-13	2024-12-31	13F	ON SEMICONDUCTOR	COM	682189105	61,950,301	-2,078,214	-3.25	3,905,966	-15.98	0.2331
2024-11-13	2024-09-30	13F	ON SEMICONDUCTOR	COM	682189105	64,028,515	-69,371	-0.11	4,649,111	5.81	0.2829
2024-08-13	2024-06-30	13F	ON SEMICONDUCTOR	COM	682189105	64,097,886	5,880,891	10.10	4,393,910	2.62	0.2812
2024-05-13	2024-03-31	13F	ON SEMICONDUCTOR	COM	682189105	58,216,995	1,150,500	2.02	4,281,860	-10.17	0.2875
2024-02-13	2023-12-31	13F	ON SEMICONDUCTOR	COM	682189105	57,066,495	565,047	1.00	4,766,764	-9.24	0.3662
2023-11-13	2023-09-30	13F	ON SEMICONDUCTOR	COM	682189105	56,501,448	420,080	0.75	5,251,810	-0.99	0.4539
2023-08-11	2023-06-30	13F	ON SEMICONDUCTOR	COM	682189105	56,081,368	-136,610	-0.24	5,304,176	14.61	0.4447
2023-08-11	2023-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	56,217,978	5,425,579	10.68	4,627,864	46.09	0.4233
2023-05-11	2023-03-31	13F	ON SEMICONDUCTOR	COM	682189105	56,217,978	5,425,579		4,627,864		0.4233
2023-02-13	2022-12-31	13F	ON SEMICONDUCTOR	COM	682189105	50,792,399	5,176,160	11.35	3,167,922	11.42	0.3147
2022-11-10	2022-09-30	13F	ON SEMICONDUCTOR	COM	682189105	45,616,239	6,297,791	16.02	2,843,260	43.74	0.2965
2022-08-12	2022-06-30	13F	ON SEMICONDUCTOR	COM	682189105	39,318,448	5,723,190	17.04	1,978,112	-5.96	0.1971
2022-05-13	2022-03-31	13F	ON SEMICONDUCTOR	COM	682189105	33,595,258	-8,389,952	-19.98	2,103,399	-26.24	0.1681
2022-02-14	2021-12-31	13F	ON SEMICONDUCTOR	COM	682189105	41,985,210	681,122	1.65	2,851,636	50.84	0.2106
2022-02-14	2021-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	41,304,088	2,376,811	6.11	1,890,487	26.87	0.1499
2021-11-15	2021-09-30	13F	ON SEMICONDUCTOR	COM	682189105	41,304,088	2,376,811		1,890,487		0.1499
2021-08-13	2021-06-30	13F	ON SEMICONDUCTOR	COM	682189105	38,927,277	-2,767,402	-6.64	1,490,135	-14.11	0.1167
2021-05-14	2021-03-31	13F	ON SEMICONDUCTOR	COM	682189105	41,694,679	846,355	2.07	1,734,916	29.77	0.1482
2021-02-08	2020-12-31	13F	ON SEMICONDUCTOR	COM	682189105	40,848,324	439,088	1.09	1,336,966	52.54	0.1189
2020-11-13	2020-09-30	13F	ON SEMICONDUCTOR	COM	682189105	40,409,236	10,345,977	34.41	876,476	47.10	0.0886
2020-08-24	2020-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	30,063,259	-2,912,143	-8.83	595,853	45.25	0.0655
2020-08-13	2020-06-30	13F	ON SEMICONDUCTOR	COM	682189105	30,063,259	-2,912,143		595,853		14,638.3645
2020-05-14	2020-03-31	13F	ON SEMICONDUCTOR	COM	682189105	32,975,402	7,745,765	30.70	410,214	-33.31	0.0568
2020-02-07	2019-12-31	13F	ON SEMICONDUCTOR	COM	682189105	25,229,637	-5,519,285	-17.95	615,099	4.13	0.0679
2019-11-13	2019-09-30	13F	ON SEMICONDUCTOR	COM	682189105	30,748,922	-3,126,239	-9.23	590,686	-13.72	0.0708
2019-08-13	2019-06-30	13F	ON SEMICONDUCTOR	COM	682189105	33,875,161	1,468,537	4.53	684,618	2.70	0.0800
2019-05-13	2019-03-31	13F	ON SEMICONDUCTOR	COM	682189105	32,406,624	759,163	2.40	666,604	27.58	0.0799
2019-02-13	2018-12-31	13F	ON SEMICONDUCTOR	COM	682189105	31,647,461	11,951,386	60.68	522,499	43.94	0.0716
2018-11-09	2018-09-30	13F	ON SEMICONDUCTOR	COM	682189105	19,696,075	-144,977	-0.73	362,999	-17.72	0.0408
2018-08-10	2018-06-30	13F	ON SEMICONDUCTOR	COM	682189105	19,841,052	-3,535,097	-15.12	441,166	-22.84	0.0521
2018-05-14	2018-03-31	13F	ON SEMICONDUCTOR	COM	682189105	23,376,149	-11,314,152	-32.61	571,781	-21.29	0.0679
2018-02-12	2017-12-31	13F	ON SEMICONDUCTOR	COM	682189105	34,690,301	-5,183,058	-13.00	726,415	-1.36	0.0852
2017-11-13	2017-09-30	13F	ON SEMICONDUCTOR	COM	682189105	39,873,359	-208,748	-0.52	736,461	30.87	0.0890
2017-08-29	2017-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	40,082,107	14,818,360	58.65	562,753	43.80	0.0699
2017-08-11	2017-06-30	13F	ON SEMICONDUCTOR	COM	682189105	40,082,107	14,818,360		562,753
2017-05-11	2017-03-31	13F	ON SEMICONDUCTOR	COM	682189105	25,263,747	-948,949	-3.62	391,336	17.00	0.0497
2017-02-10	2016-12-31	13F	ON SEMICONDUCTOR	COM	682189105	26,212,696	5,301,935	25.36	334,474	29.83	0.0447
2016-11-14	2016-09-30	13F	ON SEMICONDUCTOR	COM	682189105	20,910,761	137,066	0.66	257,621	40.60	0.0343
2016-08-11	2016-06-30	13F	ON SEMICONDUCTOR	COM	682189105	20,773,695	-3,917,308	-15.87	183,224	-22.62	0.0250
2016-05-16	2016-03-31	13F	ON SEMICONDUCTOR	COM	682189105	24,691,003	7,719,170	45.48	236,787	42.36	0.0328
2016-02-12	2015-12-31	13F	ON SEMICONDUCTOR	COM	682189105	16,971,833	7,321,168	75.86	166,324	83.34	0.0224
2015-11-10	2015-09-30	13F	ON SEMICONDUCTOR	COM	682189105	9,650,665	1,773,202	22.51	90,717	-1.49	0.0129
2015-08-25	2015-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,877,463	-5,506,011	-41.14	92,087	-43.18	0.0118
2015-08-13	2015-06-30	13F	ON SEMICONDUCTOR	COM	682189105	7,877,463			92,087
2015-05-14	2015-03-31	13F	ON SEMICONDUCTOR	COM	682189105	13,383,474	-1,593,423	-10.64	162,074	6.83	0.0206
2015-02-17	2014-12-31	13F	ON SEMICONDUCTOR	COM	682189105	14,976,897	3,601,100	31.66	151,716	49.18	0.0197
2014-11-14	2014-09-30	13F	ON SEMICONDUCTOR	COM	682189105	11,375,797	494,700	4.55	101,700	2.26	0.0138
2014-08-14	2014-06-30	13F	ON SEMICONDUCTOR	COM	682189105	10,881,097	-5,308,840	-32.79	99,453	-34.65	0.0133
2014-05-15	2014-03-31	13F	ON SEMICONDUCTOR	COM	682189105	16,189,937	-2,024,402	-11.11	152,185	1.40	0.0211
2014-02-13	2013-12-31	13F	ON SEMICONDUCTOR	COM	682189105	18,214,339	-1,568,762	-7.93	150,086	2,466.89	0.0212
2013-11-14	2013-09-30	13F	ON SEMICONDUCTOR	NOTE 2.625%12/1	682189AG0				5,847	-95.74	0.0009
2013-11-14	2013-09-30	13F	ON SEMICONDUCTOR	COM	682189105	19,783,101			144,417		0.0221
2013-09-24	2013-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	16,992,405	16,992,405		137,299		0.0225
2013-09-24	2013-06-30	13F/A-1	ON SEMICONDUCTOR	NOTE 2.625%12/1	682189AG0				5,913		0.0010
2013-08-14	2013-06-30	13F	ON SEMICONDUCTOR	COM	682189105	16,992,405			137,299		0.0225
2013-08-14	2013-06-30	13F	ON SEMICONDUCTOR	NOTE 2.625%12/1	682189AG0				5,913

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.