ON Semiconductor Corporation
US ˙ NasdaqGS ˙ US6821891057

SecurityON / ON Semiconductor Corporation
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership5,847 shares
Latest Disclosed Value $ 316,662
Parallel Advisors, LLC ownership in ON / ON Semiconductor Corporation

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 5,847 shares of ON Semiconductor Corporation (US:ON) valued at $316,615 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 5,658 shares of ON Semiconductor Corporation. This represents a change in shares of 3.34% during the quarter. The current value of the position is $783,089 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (ON) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

ON / ON Semiconductor Corporation Historical Put/Call Ratio
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)
2026-02-11 2025-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 5,847 189 3.34 317 13.26 0.0058
2025-11-13 2025-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 5,658 -137 -2.36 279 -7.92 0.0051
2025-07-08 2025-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 5,795 2,309 66.24 304 114.89 0.0061
2025-04-08 2025-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,486 -62 -1.75 142 -36.77 0.0032
2025-02-10 2024-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,548 -500 -12.35 224 -23.89 0.0050
2024-11-13 2024-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 4,048 846 26.42 294 33.79 0.0069
2024-08-08 2024-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,202 -92 -2.79 219 -9.50 0.0056
2024-05-06 2024-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,294 -86 -2.54 242 -14.18 0.0066
2024-02-12 2023-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,380 -375 -9.99 282 -19.20 0.0084
2024-05-20 2023-09-30 13F/A-1 ON SEMICONDUCTOR CORP COM Stock 682189105 3,755 148 4.10 349 2.35 0.0116
2023-11-14 2023-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,755 148 349 0.0116
2024-05-20 2023-06-30 13F/A-1 ON SEMICONDUCTOR CORP COM Stock 682189105 3,607 68 1.92 341 17.18 0.0110
2023-08-04 2023-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,607 68 341 0.0110
2024-05-20 2023-03-31 13F/A-1 ON SEMICONDUCTOR CORP COM Stock 682189105 3,539 139 4.09 291 37.26 0.0098
2023-04-25 2023-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,539 139 291 0.0098
2023-02-06 2022-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,400 10 0.29 212 0.47 0.0092
2022-11-10 2022-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 3,390 2,063 155.46 211 214.93 0.0097
2022-08-01 2022-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 1,327 -370 -21.80 67 -38.53 0.0031
2022-04-28 2022-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 1,697 -774 -31.32 109 -35.12 0.0043
2022-01-20 2021-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 2,471 1,600 183.70 168 320.00 0.0062
2021-11-02 2021-09-30 13F/A-1 ON SEMICONDUCTOR CORP COM Stock 682189105 871 214 32.57 40 60.00 0.0016
2021-08-06 2021-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 657 258 64.66 25 47.06 0.0011
2021-04-23 2021-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 399 155 63.52 17 112.50 0.0008
2021-02-02 2020-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 244 0 0.00 8 60.00 0.0004
2020-10-27 2020-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 244 0 0.00 5 25.00 0.0003
2020-07-16 2020-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 244 142 139.22 4 300.00 0.0003
2020-04-27 2020-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 102 -92 -47.42 1 -80.00 0.0001
2020-01-30 2019-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 194 0 0.00 5 25.00 0.0004
2019-11-01 2019-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 194 -495 -71.84 4 -71.43 0.0003
2019-08-05 2019-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 689 310 81.79 14 75.00 0.0014
2019-05-01 2019-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 379 255 205.65 8 300.00 0.0009
2019-02-05 2018-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 124 -276 -69.00 2 -71.43 0.0003
2018-11-01 2018-09-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 400 0 0.00 7 -12.50 0.0009
2018-07-30 2018-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 400 0 0.00 8 -20.00 0.0011
2018-05-08 2018-03-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 400 0 0.00 10 25.00 0.0016
2018-02-13 2017-12-31 13F ON SEMICONDUCTOR CORP COM Stock 682189105 400 0 0.00 8 -11.11 0.0013
2017-11-15 2017-09-30 13F/A-1 ON SEMICONDUCTOR CORP COM Stock 682189105 400 0 0.00 9 50.00 0.0015
2017-08-07 2017-06-30 13F ON SEMICONDUCTOR CORP COM Stock 682189105 400 400 6 0.0011
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-01-19 2021-12-31 13F ON SEMICONDUCTOR CORP COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F ON SEMICONDUCTOR CORP COM Stock Call 657 25 n/a n/a n/a
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.