ILMN Open Interest
Illumina Inc (ILMN) had 27.56K open option contracts as of Nov 4, 2026: 15.38K calls and 12.18K puts. Open interest rose 2.2% over the past four weeks. The put/call open interest ratio is 0.79, so calls outnumber puts.
Open Interest by Strike
Showing results for ILMN, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ILMN, 2026-11-20(m), calls & puts
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Highest Open Interest Options
Showing results for ILMN, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ILMN, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ILMN, all expirations, calls & puts. View full history
ILMN 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 ILMN have?
Illumina had 27.56K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 26.32K contracts.
Is ILMN open interest rising or falling?
Open interest rose 2.2% over the past four weeks. It was 26.97K contracts on Oct 7, 2026. See the ILMN open interest history for a longer view.
What is the ILMN put/call open interest ratio?
The Illumina put/call open interest ratio was 0.79 as of Nov 4, 2026. Four weeks earlier it was 0.72.
What is Illumina Inc?
Illumina provides tools and services to analyze genetic material with life science and clinical lab applications.