Stocks › ON
ON SEMICONDUCTOR CORP
ON·Nasdaq·
United States·USD
United States·USD$82.51
-3.80 (-4.40%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
ON
ON SEMICONDUCTOR CORP · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ONS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ON by members of U.S. Congress · 49 on record · 2 in the last 12 months
Whale Activity
Position changes in ON reported for 2026-06-30 by 28 tracked institutional filers
- Increased7
- New7
- Held0
- Decreased4
- Closed0
- No prior filing10
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 41.0M | $3.87B | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 25.6M | $2.42B | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 19.6M | $1.86B | decreased |
| TWO SIGMA INVESTMENTS, LP | 4.1M | $384.6M | decreased |
| Assenagon Asset Management S.A. | 2.8M | $265.5M | — |
| CITADEL ADVISORS LLC | 1.9M | $183.0M | increased |
| MILLENNIUM MANAGEMENT LLC | 85.0M | $155.1M | new |
| Point72 Asset Management, L.P. | 1.6M | $151.8M | new |
| D. E. Shaw & Co., Inc. | 1.2M | $110.2M | increased |
| BlackRock, Inc. | 56.2M | $67.7M | increased |
| BOUSSARD & GAVAUDAN GESTION SAS | 25.8K | $46.6M | — |
| CITADEL ADVISORS LLC | 31.9M | $38.5M | new |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ON insiders, by quarter · Form 4
Recent Insider Transactions
1,018 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Sale | −15.6K | $80.00 | $1.2M | Oct 1, 2026 | Form 4 ↗ |
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Tax withholding | −470 | $127.00 | $60K | May 26, 2026 | Form 4 ↗ |
| Deitrich ThomasDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| WATERS GREGORY LDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| CARTER SUSAN KDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Yan Christine YDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| KIDDOO BRUCE EDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| MASCARENAS PAUL ANTHONYDirector | Grant / award | +1,986 | $0.00 | $0 | May 14, 2026 | Form 4 ↗ |
| Thad TrentExec VP & CFO | Sale | −30.0K | $100.00 | $3.0M | Apr 24, 2026 | Form 4 ↗ |
| Thad TrentExec VP & CFO | Sale | −30.0K | $93.00 | $2.8M | Apr 23, 2026 | Form 4 ↗ |
| Thad TrentExec VP & CFO | Sale | −30.0K | $80.00 | $2.4M | Apr 16, 2026 | Form 4 ↗ |
| MASCARENAS PAUL ANTHONYDirector | Grant / award | +168 | $62.19 | $10K | Apr 3, 2026 | Form 4 ↗ |
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Sale | −6,114 | $58.67 | $359K | Mar 13, 2026 | Form 4 ↗ |
| El-Khoury HassaneCEO & President · Director | Tax withholding | −36.8K | $69.11 | $2.5M | Feb 21, 2026 | Form 4 ↗ |
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Tax withholding | −9,583 | $69.11 | $662K | Feb 21, 2026 | Form 4 ↗ |
| Thad TrentExec VP & CFO | Tax withholding | −10.4K | $69.11 | $718K | Feb 21, 2026 | Form 4 ↗ |
| KEETON SIMONGroup President, PSG | Tax withholding | −7,788 | $69.11 | $538K | Feb 21, 2026 | Form 4 ↗ |
| El-Khoury HassaneCEO & President · Director | Grant / award | +75.3K | $0.00 | $0 | Feb 20, 2026 | Form 4 ↗ |
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Tax withholding | −1,455 | $69.11 | $101K | Feb 20, 2026 | Form 4 ↗ |
| GOPALSWAMY SUDHIRGroup President, AMG & ISG | Grant / award | +31.8K | $0.00 | $0 | Feb 20, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ON · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Select Semiconductors Portfolio Fidelity Select Portfolios | 22.2M | $2.68B | 5.22% | May 31, 2026 |
| Select Technology Portfolio Fidelity Select Portfolios | 16.7M | $2.01B | 5.29% | May 31, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 12.4M | $1.18B | 0.05% | Jun 30, 2026 |
| VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS | 10.2M | $959.9M | 0.06% | Jun 30, 2026 |
| VANGUARD MID-CAP INDEX FUND VANGUARD INDEX FUNDS | 8.5M | $802.7M | 0.36% | Jun 30, 2026 |
| iShares Semiconductor ETF iShares Trust | 8.3M | $787.6M | 1.65% | Jun 30, 2026 |
| Janus Henderson Enterprise Fund Janus Investment Fund | 7.5M | $709.9M | 3.17% | Jun 30, 2026 |
| Fidelity 500 Index Fund Fidelity Concord Street Trust | 5.0M | $608.2M | 0.07% | May 31, 2026 |
| iShares Core S&P 500 ETF iShares Trust | 5.4M | $509.7M | 0.06% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | 4.7M | $449.0M | 0.06% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list ON's shares (CUSIP 682189105), each fund at its latest report since Mar 8, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming ON SEMICONDUCTOR CORP as client
No lobbying filings found naming ON SEMICONDUCTOR CORP as the client.
Government Contracts
Federal awards to ON SEMICONDUCTOR CORP · USAspending
No federal contract awards found for ON SEMICONDUCTOR CORP.
U.S. Patents
Recent USPTO applications naming ON SEMICONDUCTOR CORP
No USPTO patent applications found for ON SEMICONDUCTOR CORP.
Annual Financials
From ON's 10-K filings · XBRL
No annual XBRL figures on record for ON. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in ON's price history.
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 1.01, 8.01, 9.01Material agreement · Other eventsOct 1, 2026
EDGAR ↗ - 8-K · Items 8.01Other eventsAug 13, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsAug 3, 2026
EDGAR ↗ - 8-K · Items 1.01, 8.01, 9.01Material agreement · Other eventsJun 25, 2026
EDGAR ↗ - 8-K · Items 5.02, 5.07Officer / director change · Shareholder voteMay 18, 2026
EDGAR ↗ - 8-K · Items 1.01, 2.03, 3.02, 8.01, 9.01Material agreement · Direct financial obligation · Unregistered sale of equityMay 12, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsMay 7, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsMay 6, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 4, 2026
EDGAR ↗
About ON SEMICONDUCTOR CORP
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersSCOTTSDALE, AZ
IncorporatedDE
SEC CIK0001097864 ↗
Former namesSCG HOLDING CORP