Morgan Stanley reports 8.91% decrease in ownership of ON / ON Semiconductor Corporation

ON Semiconductor Corporation

US ˙ NasdaqGS ˙ US6821891057

Security	ON / ON Semiconductor Corporation
Institution	Morgan Stanley
Latest Disclosed Ownership	6,107,253 shares
Latest Disclosed Value	$ 378,161,209

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 6,107,253 shares of ON Semiconductor Corporation (US:ON) valued at $378,161,106 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 6,704,559 shares of ON Semiconductor Corporation. This represents a change in shares of -8.91% during the quarter. The current value of the position is $805,058,090 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	ON SEMICONDUCTOR	COM	682189105	6,107,253	-597,306	-8.91	378,161	4.16	0.0228
2026-05-27	2025-12-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	6,704,559	-666,577	-9.04	363,052	-0.12	0.0217
2026-02-13	2025-12-31	13F	ON SEMICONDUCTOR	COM	682189105	6,704,559	-666,577		363,052		0.0217
2026-05-27	2025-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,371,136	-1,140,696	-13.40	363,471	-18.52	0.0220
2025-11-14	2025-09-30	13F	ON SEMICONDUCTOR	COM	682189105	7,371,136	-1,140,696		363,471		0.0220
2025-08-15	2025-06-30	13F	ON SEMICONDUCTOR	COM	682189105	8,511,832	939,254	12.40	446,105	44.78	0.0291
2025-05-15	2025-03-31	13F	ON SEMICONDUCTOR	COM	682189105	7,572,578	-221,464	-2.84	308,128	-37.30	0.0220
2025-05-15	2024-12-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,794,042	69,217	0.90	491,414	-12.39	0.0344
2025-02-14	2024-12-31	13F	ON SEMICONDUCTOR	COM	682189105	7,794,042	69,217		491,414		0.0344
2025-05-14	2024-09-30	13F/A-2	ON SEMICONDUCTOR	COM	682189105	7,724,825	808,845	11.70	560,900	18.31	0.0407
2025-02-14	2024-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,724,825	808,845		560,900		0.0407
2024-11-14	2024-09-30	13F	ON SEMICONDUCTOR	COM	682189105	7,724,825	808,845		560,900		0.0407
2025-05-14	2024-06-30	13F/A-2	ON SEMICONDUCTOR	COM	682189105	6,915,980	-299,726	-4.15	474,091	-10.67	0.0367
2024-10-17	2024-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	6,915,980	-299,726		474,091		0.0367
2024-08-14	2024-06-30	13F	ON SEMICONDUCTOR	COM	682189105	6,915,980	-299,726		474,091		0.0367
2024-10-17	2024-03-31	13F/A-2	ON SEMICONDUCTOR	COM	682189105	7,215,706	20,617	0.29	530,715	-11.70	0.0426
2024-08-16	2024-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,215,706	20,617		530,715		0.0050
2024-05-15	2024-03-31	13F	ON SEMICONDUCTOR	COM	682189105	7,215,706	20,617		530,715		0.0426
2024-08-16	2023-12-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	7,195,089	1,857,026	34.79	601,006	21.13	0.0530
2024-02-13	2023-12-31	13F	ON SEMICONDUCTOR	COM	682189105	7,195,089	1,857,026		601,006		0.0530
2023-11-15	2023-09-30	13F	ON SEMICONDUCTOR	COM	682189105	5,338,063	41,795	0.79	496,173	-0.95	0.0505
2023-08-14	2023-06-30	13F	ON SEMICONDUCTOR	COM	682189105	5,296,268	45,753	0.87	500,921	15.89	0.0494
2023-05-15	2023-03-31	13F	ON SEMICONDUCTOR	COM	682189105	5,250,515	1,021,590	24.16	432,222	63.87	0.0463
2023-02-14	2022-12-31	13F	ON SEMICONDUCTOR	COM	682189105	4,228,925	1,054,470	33.22	263,758	33.30	0.0300
2022-11-14	2022-09-30	13F	ON SEMICONDUCTOR	COM	682189105	3,174,455	374,728	13.38	197,863	40.47	0.0270
2022-10-27	2022-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,799,727	1,120,961	66.77	140,854	34.01	0.0183
2022-08-15	2022-06-30	13F	ON SEMICONDUCTOR	COM	682189105	2,799,727	1,120,961		140,854		0.0037
2022-10-27	2022-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	1,678,766	-1,251,780	-42.71	105,108	-47.19	0.0142
2022-05-13	2022-03-31	13F	ON SEMICONDUCTOR	COM	682189105	1,678,766	-1,251,780		105,108		0.0142
2022-02-14	2021-12-31	13F	ON SEMICONDUCTOR	COM	682189105	2,930,546	1,658,561	130.39	199,043	241.89	0.0246
2021-11-15	2021-09-30	13F	ON SEMICONDUCTOR	COM	682189105	1,271,985	-1,199,813	-48.54	58,219	-38.47	0.0078
2021-08-23	2021-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,471,798	1,814,114	275.83	94,621	245.76	0.0125
2021-08-16	2021-06-30	13F	ON SEMICONDUCTOR	COM	682189105	2,471,798	1,814,114		94,621		0.0026
2021-05-17	2021-03-31	13F	ON SEMICONDUCTOR	COM	682189105	657,684	-2,098,157	-76.13	27,366	-69.66	0.0040
2021-02-16	2020-12-31	13F	ON SEMICONDUCTOR	COM	682189105	2,755,841	-6,280,237	-69.50	90,200	-53.98	0.0139
2020-11-13	2020-09-30	13F	ON SEMICONDUCTOR	COM	682189105	9,036,078	-753,978	-7.70	195,994	1.01	0.0379
2020-08-14	2020-06-30	13F	ON SEMICONDUCTOR	COM	682189105	9,790,056	7,211,983	279.74	194,038	505.03	0.0429
2020-05-26	2020-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,578,073	-3,712,184	-59.01	32,071	-79.09	0.0087
2020-05-15	2020-03-31	13F	ON SEMICONDUCTOR	COM	682189105	2,578,073	-3,712,184		32,071		2,463.7214
2020-02-14	2019-12-31	13F	ON SEMICONDUCTOR	COM	682189105	6,290,257	2,530,312	67.30	153,356	112.33	0.0357
2019-11-14	2019-09-30	13F	ON SEMICONDUCTOR	COM	682189105	3,759,945	370,642	10.94	72,227	5.45	0.0191
2019-08-14	2019-06-30	13F	ON SEMICONDUCTOR	COM	682189105	3,389,303	-48,772	-1.42	68,497	-3.14	0.0182
2019-05-15	2019-03-31	13F	ON SEMICONDUCTOR	COM	682189105	3,438,075	-2,256,391	-39.62	70,721	-24.78	0.0200
2019-02-14	2018-12-31	13F	ON SEMICONDUCTOR	COM	682189105	5,694,466	1,074,212	23.25	94,016	10.41	0.0281
2019-04-23	2018-09-30	13F/A-2	ON SEMICONDUCTOR	COM	682189105	4,620,254	1,563,915	51.17	85,152	25.30	0.0213
2018-11-20	2018-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	4,620,254	0		85,152		0.0213
2018-11-14	2018-09-30	13F	ON SEMICONDUCTOR	COM	682189105	4,620,254	1,563,915		85,152
2019-04-23	2018-06-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	3,056,339	445,338	17.06	67,957	6.41	0.0184
2018-08-14	2018-06-30	13F	ON SEMICONDUCTOR	COM	682189105	3,056,339	445,338		67,957
2019-04-23	2018-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,611,001	-734,718	-21.96	63,865	-8.84	0.0177
2018-05-14	2018-03-31	13F	ON SEMICONDUCTOR	COM	682189105	2,611,001	-734,718		63,865
2019-04-23	2017-12-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	3,345,719	144,594	4.52	70,058	18.49	0.0192
2018-02-14	2017-12-31	13F	ON SEMICONDUCTOR	COM	682189105	3,345,719	144,594		70,058
2017-11-14	2017-09-30	13F	ON SEMICONDUCTOR	COM	682189105	3,201,125	-810,115	-20.20	59,124	4.98	0.0177
2017-08-11	2017-06-30	13F	ON SEMICONDUCTOR	COM	682189105	4,011,240	1,989,773	98.43	56,317	79.86	0.0170
2017-05-22	2017-03-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,021,467	466,172	29.97	31,312	57.77	0.0096
2017-05-12	2017-03-31	13F	ON SEMICONDUCTOR	COM	682189105	2,021,467			31,312
2017-02-22	2016-12-31	13F/A-1	ON SEMICONDUCTOR	COM	682189105	1,555,295	-15,388	-0.98	19,846	2.57	0.0065
2017-02-13	2016-12-31	13F	ON SEMICONDUCTOR	COM	682189105	1,555,295			19,846
2016-11-10	2016-09-30	13F	ON SEMICONDUCTOR	COM	682189105	1,570,683	-987,817	-38.61	19,349	-14.26	0.0066
2016-08-12	2016-06-30	13F	ON SEMICONDUCTOR	COM	682189105	2,558,500	1,231,002	92.73	22,566	77.25	0.0082
2016-05-12	2016-03-31	13F	ON SEMICONDUCTOR	COM	682189105	1,327,498	-1,925,693	-59.19	12,731	-60.07	0.0049
2016-02-09	2015-12-31	13F	ON SEMICONDUCTOR	COM	682189105	3,253,191	1,041,392	47.08	31,882	53.35	0.0115
2016-02-08	2015-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	2,211,799	1,227,892	124.80	20,791	80.78	0.0077
2015-11-09	2015-09-30	13F	ON SEMICONDUCTOR	COM	682189105	2,211,799			20,791
2015-08-12	2015-06-30	13F	ON SEMICONDUCTOR	COM	682189105	983,907	-1,599,301	-61.91	11,501	-63.23	0.0040
2015-05-14	2015-03-31	13F	ON SEMICONDUCTOR	COM	682189105	2,583,208	1,927,586	294.01	31,282	371.04	0.0115
2015-02-13	2014-12-31	13F	ON SEMICONDUCTOR	COM	682189105	655,622	-5,200	-0.79	6,641	12.44	0.0024
2014-12-16	2014-09-30	13F/A-1	ON SEMICONDUCTOR	COM	682189105	660,822	33,593	5.36	5,906	0.17	0.0023
2014-11-14	2014-09-30	13F	ON SEMICONDUCTOR	COM	682189105	660,822			5,906
2014-05-13	2014-03-31	13F	ON SEMICONDUCTOR	COM	682189105	627,229	362,034	136.52	5,896	169.84	0.0025
2014-02-13	2013-12-31	13F	ON SEMICONDUCTOR	COM	682189105	265,195	-335,941	-55.88	2,185	-50.27	0.0009
2013-11-13	2013-09-30	13F	ON SEMICONDUCTOR	COM	682189105	601,136	-680,909	-53.11	4,394	-57.59	0.0021
2013-11-13	2013-09-30	13F	ON SEMICONDUCTOR SENIOR	CORP CV	682189AG0	23,000	0		23		0.0000
2013-08-08	2013-06-30	13F	ON SEMICONDUCTOR	COM	682189105	1,282,045	1,282,045		10,360		0.0052
2013-08-08	2013-06-30	13F	ON SEMICONDUCTOR SENIOR	CORP CV	682189AG0	23,000	0		24		0.0000

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.