ON Semiconductor Corporation
US ˙ NasdaqGS ˙ US6821891057

SecurityON / ON Semiconductor Corporation
InstitutionWalleye Capital LLC
Latest Disclosed Ownership35,154 shares
Latest Disclosed Value $ 2,176,736
Walleye Capital LLC ownership in ON / ON Semiconductor Corporation

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 35,154 shares of ON Semiconductor Corporation (US:ON) valued at $2,176,736 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 361,628 shares of ON Semiconductor Corporation. This represents a change in shares of -90.28% during the quarter. The current value of the position is $4,122,158 USD.

Walleye Capital 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 42,900 of underlying shares valued at $2,656,368 USD and put options representing 70,100 of underlying shares valued at $4,340,592 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)
2026-05-13 2026-03-31 13F/A-1 ON SEMICONDUCTOR COM 682189105 35,154 -326,474 -90.28 2,177 -88.89 0.0091
2026-05-08 2026-03-31 13F ON SEMICONDUCTOR COM 682189105 35,154 -326,474 2,177 0.0090
2026-02-13 2025-12-31 13F ON SEMICONDUCTOR COM 682189105 361,628 338,297 1,449.99 19,582 1,602.78 0.0601
2025-11-14 2025-09-30 13F ON SEMICONDUCTOR COM 682189105 23,331 -164,979 -87.61 1,150 -88.35 0.0043
2025-08-13 2025-06-30 13F ON SEMICONDUCTOR COM 682189105 188,310 -100,025 -34.69 9,869 -15.88 0.0383
2025-05-14 2025-03-31 13F ON SEMICONDUCTOR COM 682189105 288,335 218,562 313.25 11,732 166.70 0.0530
2025-02-13 2024-12-31 13F ON SEMICONDUCTOR COM 682189105 69,773 -336,617 -82.83 4,399 -85.09 0.0108
2024-11-14 2024-09-30 13F ON SEMICONDUCTOR COM 682189105 406,390 132,762 48.52 29,508 57.31 0.0614
2024-08-14 2024-06-30 13F ON SEMICONDUCTOR COM 682189105 273,628 80,167 41.44 18,757 31.82 0.0335
2024-05-15 2024-03-31 13F ON SEMICONDUCTOR COM 682189105 193,461 180,303 1,370.29 14,229 1,194.72 0.0253
2024-02-14 2023-12-31 13F ON SEMICONDUCTOR COM 682189105 13,158 13,158 1,099 0.0023
2022-05-27 2021-12-31 13F/A-01 ON SEMICONDUCTOR COM 682189105 0 -15,314 -100.00 0 -100.00
2022-03-03 2021-12-31 13F ON SEMICONDUCTOR COM 682189105 0 -15,314 0
2021-11-15 2021-09-30 13F ON SEMICONDUCTOR COM 682189105 15,314 15,314 701 0.0199
2021-05-17 2021-03-31 13F ON SEMICONDUCTOR COM 682189105 0 -13,541 -100.00 0 -100.00
2021-02-16 2020-12-31 13F ON SEMICONDUCTOR COM 682189105 13,541 -18,175 -57.31 443 -35.61 0.0296
2020-11-16 2020-09-30 13F ON SEMICONDUCTOR COM 682189105 31,716 31,716 688 0.0767
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
(%)
2026-05-13 2026-03-31 13F/A ON SEMICONDUCTOR COM Call 42,900 -26.79 2,656 -16.29 n/a n/a n/a
2026-05-08 2026-03-31 13F ON SEMICONDUCTOR COM Call 42,900 2,656 n/a n/a n/a
2026-02-13 2025-12-31 13F ON SEMICONDUCTOR COM Call 58,600 -11.35 3,173 -2.64 n/a n/a n/a
2025-11-14 2025-09-30 13F ON SEMICONDUCTOR COM Call 66,100 -43.16 3,259 -46.53 n/a n/a n/a
2025-08-13 2025-06-30 13F ON SEMICONDUCTOR COM Call 116,300 93.19 6,095 148.88 n/a n/a n/a
2025-05-14 2025-03-31 13F ON SEMICONDUCTOR COM Call 60,200 -62.98 2,450 -76.11 n/a n/a n/a
2025-02-13 2024-12-31 13F ON SEMICONDUCTOR COM Call 162,600 -11.05 10,252 -22.77 n/a n/a n/a
2024-11-14 2024-09-30 13F ON SEMICONDUCTOR COM Call 182,800 -15.02 13,273 -9.98 n/a n/a n/a
2024-08-14 2024-06-30 13F ON SEMICONDUCTOR COM Call 215,100 -3.63 14,745 -10.18 n/a n/a n/a
2024-05-15 2024-03-31 13F ON SEMICONDUCTOR COM Call 223,200 18.47 16,416 4.31 n/a n/a n/a
2024-02-14 2023-12-31 13F ON SEMICONDUCTOR COM Call 188,400 -3.19 15,737 -13.00 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ON SEMICONDUCTOR COM Call 194,600 7.51 18,088 5.67 n/a n/a n/a
2023-11-14 2023-09-30 13F ON SEMICONDUCTOR COM Call 194,600 18,088 n/a n/a n/a
2023-08-14 2023-06-30 13F ON SEMICONDUCTOR COM Call 181,000 17,119 n/a n/a n/a
2023-02-14 2022-12-31 13F ON SEMICONDUCTOR COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F ON SEMICONDUCTOR COM Call 3,400 212 n/a n/a n/a
Disclosed Put 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
(%)
2026-05-13 2026-03-31 13F/A ON SEMICONDUCTOR COM Put 70,100 5.26 4,341 20.35 n/a n/a n/a
2026-05-08 2026-03-31 13F ON SEMICONDUCTOR COM Put 70,100 4,341 n/a n/a n/a
2026-02-13 2025-12-31 13F ON SEMICONDUCTOR COM Put 66,600 -6.33 3,606 2.88 n/a n/a n/a
2025-11-14 2025-09-30 13F ON SEMICONDUCTOR COM Put 71,100 -45.77 3,506 -48.98 n/a n/a n/a
2025-08-13 2025-06-30 13F ON SEMICONDUCTOR COM Put 131,100 245.00 6,871 344.37 n/a n/a n/a
2025-05-14 2025-03-31 13F ON SEMICONDUCTOR COM Put 38,000 -86.57 1,546 -91.34 n/a n/a n/a
2025-02-13 2024-12-31 13F ON SEMICONDUCTOR COM Put 283,000 -12.38 17,843 -23.92 n/a n/a n/a
2024-11-14 2024-09-30 13F ON SEMICONDUCTOR COM Put 323,000 -1.49 23,453 4.34 n/a n/a n/a
2024-08-14 2024-06-30 13F ON SEMICONDUCTOR COM Put 327,900 113.48 22,478 98.96 n/a n/a n/a
2024-05-15 2024-03-31 13F ON SEMICONDUCTOR COM Put 153,600 14.97 11,297 1.24 n/a n/a n/a
2024-02-14 2023-12-31 13F ON SEMICONDUCTOR COM Put 133,600 24.63 11,160 11.99 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ON SEMICONDUCTOR COM Put 107,200 33.83 9,964 31.54 n/a n/a n/a
2023-11-14 2023-09-30 13F ON SEMICONDUCTOR COM Put 107,200 9,964 n/a n/a n/a
2023-08-14 2023-06-30 13F ON SEMICONDUCTOR COM Put 80,100 7,576 n/a n/a n/a
2023-02-14 2022-12-31 13F ON SEMICONDUCTOR COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F ON SEMICONDUCTOR COM Put 1,600 100 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.