ON options flow: unusual options activity in ON Semiconductor Corp.
Updated 28 September 2026, 09:54 ET
Over the last week the tape recorded 110 unusual options prints in ON Semiconductor Corp. (ON), $9.4M of tracked premium, close to even between bullish and bearish premium. Bullish premium was $4.2M against $3.7M bearish; $8.6M went into calls and $774K into puts, a put call ratio of 0.09. The largest print was $910K of ON 15 Jan 2027 $80 calls on 25 September 2026, executed at ask. The last session with prints, 28 September 2026, added 2 prints and $82K of premium. ON closed at $77.20 on 25 September 2026, up 5.5%.
This week's unusual flow
Prints from 21 September 2026 to 28 September 2026, 6 sessions. Delayed tier: every print is shown twenty minutes after it executed, and the page is rebuilt after each session.
Net premium is bullish minus bearish premium. The put call ratio is put premium divided by call premium, weighted by money rather than by contract count. Sweeps is the share of prints executed across several exchanges at once. Read the guide: Reading the Pulse.
Largest prints of the week
| Date | Contract | Type | Size | Open int. | Premium | Execution | Sentiment | Tier |
|---|---|---|---|---|---|---|---|---|
| 25 Sep 2026 | ON 15 Jan 2027 $80 calls | Trade | 1,000 | 2,298 | $910K | At ask | Bullish | Notable |
| 22 Sep 2026 | ON 20 Nov 2026 $70 calls | Sweep | 789 | 6,390 | $706K | At bid | Bearish | High conviction |
| 21 Sep 2026 | ON 20 Nov 2026 $80 calls | Trade | 2,000 | 6,229 | $650K | At bid | Bearish | Notable |
| 21 Sep 2026 | ON 20 Nov 2026 $80 calls | Sweep | 1,000 | 6,229 | $339K | At bid | Neutral | Notable |
| 21 Sep 2026 | ON 20 Nov 2026 $80 calls | Sweep | 1,000 | 6,229 | $331K | At bid | Bearish | High conviction |
| 25 Sep 2026 | ON 21 Jan 2028 $65 calls | Sweep | 100 | 458 | $268K | At ask | Bullish | Notable |
| 24 Sep 2026 | ON 16 Oct 2026 $100 puts | Trade | 84 | 271 | $224K | At bid | Bullish | Notable |
| 22 Sep 2026 | ON 20 Nov 2026 $70 calls | Sweep | 212 | 6,390 | $194K | At ask | Bullish | High conviction |
| 23 Sep 2026 | ON 21 May 2027 $55 calls | Trade | 69 | 610 | $175K | At ask | Neutral | |
| 24 Sep 2026 | ON 15 Jan 2027 $80 calls | Sweep | 256 | 2,225 | $165K | At bid | Bearish | Notable |
| 22 Sep 2026 | ON 20 Nov 2026 $70 calls | Sweep | 182 | 6,390 | $163K | At ask | Bullish | Notable |
| 22 Sep 2026 | ON 20 Nov 2026 $70 calls | Sweep | 185 | 6,390 | $148K | At ask | Bullish | High conviction |
Size above open interest means the trade opened a position larger than everything that existed in the contract the night before. Above ask and below bid are the most aggressive executions. Read the guide: Size versus open interest.
Where the money is aimed
| Expiry | Prints | Premium | Calls share | Net premium |
|---|---|---|---|---|
| 20 Nov 2026 | 47 | $4.8M | 97% | -$850K |
| 15 Jan 2027 | 10 | $1.4M | 92% | +$766K |
| 16 Oct 2026 | 19 | $1.1M | 78% | +$324K |
| 23 Oct 2026 | 10 | $513K | 66% | -$25K |
| 21 Jan 2028 | 4 | $397K | 100% | +$211K |
| 2 Oct 2026 | 2 | $232K | 100% | -$232K |
The most premium, $4.8M, is aimed at the 20 Nov 2026 expiry; the nearest expiry with unusual prints is 2 Oct 2026.
A print in a contract expiring this week is a view about the next few days, often about a known event; a print months out is a different kind of statement. Read the guide: 0DTE options flow.
The last session, 28 September 2026
| Date | Contract | Type | Size | Open int. | Premium | Execution | Sentiment | Tier |
|---|---|---|---|---|---|---|---|---|
| 28 Sep 2026 | ON 20 Nov 2026 $95 puts | Trade | 22 | 22 | $45K | At ask | Bearish | |
| 28 Sep 2026 | ON 18 Dec 2026 $85 calls | Trade | 70 | 720 | $38K | At ask | Bullish |
Every print in ON with its full detail, the live tape, one tap filters and saved screeners: open ON in Options Sentiment Screener.
Price
The live quote and the price chart sit beside the ticker's flow in the app: open ON in Options Sentiment Screener.
Analysts
The most recent analyst targets on file, from 20 firms, have a median of $100, 29.5% above the last close.
Calls bought at a strike above the average target are a bet that the analysts are too cautious; puts far below the price in a name they like are protection or a strong disagreement. Read the guide: Reading one ticker's flow.
About ON Semiconductor Corp.
- Exchange
- Nasdaq
- Sector
- Information Technology
- Industry
- Electronic Equipment
- Headquarters
- Phoenix, Arizona
- Website
- onsemi.com
ON Semiconductor Corporation provides intelligent sensing and power solutions worldwide. Its intelligent power technologies enable the electrification of the automotive industry that allows for lighter and longer-range electric vehicles, empowers fast-charging systems, and propels sustainable energy for the solar strings, industrial power, and storage systems.
In the same sector
Flow pages for other Information Technology names in the S&P 500:
NVDA NVIDIA Corp.AAPL Apple Inc.MSFT Microsoft Corp.AVGO Broadcom Inc.MU Micron Technology Inc.AMD Advanced Micro Devices Inc.INTC Intel Corp.PLTR Palantir Technologies Inc.
Learn
- What unusual options activity means
- Reading one ticker's flow
- Sweeps, blocks and where a trade printed
- Size versus open interest
- Bullish or bearish, how a print's sentiment is inferred
- The conviction score and whale prints
The live tape for ON with every print's execution detail, one tap filters for calls, puts, sweeps and 0DTE, saved screeners and, for Realtime subscribers, push alerts and no delay. The same screen is in the iOS and Android apps.
Open ON in Options Sentiment Screener