ALC Open Interest
Alcon Inc (ALC) had 41.87K open option contracts as of Nov 4, 2026: 20.14K calls and 21.73K puts. Open interest rose 43.9% over the past four weeks. The put/call open interest ratio is 1.08, so puts outnumber calls.
Open Interest by Strike
Showing results for ALC, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ALC, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for ALC, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ALC, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ALC, all expirations, calls & puts. View full history
ALC Open Interest FAQ
What is open interest?
Open interest is the number of option contracts that are open and not yet closed, exercised, or expired. The Options Clearing Corporation calculates it once a day from the previous day's trades, and it is published before the market opens.
How much open interest does ALC have?
Alcon had 41.87K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 37.36K contracts.
Is ALC open interest rising or falling?
Open interest rose 43.9% over the past four weeks. It was 29.09K contracts on Oct 7, 2026. See the ALC open interest history for a longer view.
What is the ALC put/call open interest ratio?
The Alcon put/call open interest ratio was 1.08 as of Nov 4, 2026. Four weeks earlier it was 0.95.
What is Alcon Inc?
Alcon is one of the leading visioncare companies in the world.