ECL Open Interest
Ecolab Inc (ECL) had 16.96K open option contracts as of Nov 4, 2026: 11.47K calls and 5.49K puts. Open interest fell 12.6% over the past four weeks. The put/call open interest ratio is 0.48, so calls outnumber puts.
Open Interest by Strike
Showing results for ECL, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ECL, 2026-11-20(m), calls & puts
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| Put Open Interest Total | |
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Highest Open Interest Options
Showing results for ECL, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ECL, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ECL, all expirations, calls & puts. View full history
ECL 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 ECL have?
Ecolab had 16.96K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 16.73K contracts.
Is ECL open interest rising or falling?
Open interest fell 12.6% over the past four weeks. It was 19.4K contracts on Oct 7, 2026. See the ECL open interest history for a longer view.
What is the ECL put/call open interest ratio?
The Ecolab put/call open interest ratio was 0.48 as of Nov 4, 2026. Four weeks earlier it was 0.36.
What is Ecolab Inc?
Ecolab produces and markets cleaning and sanitation products for the industrial manufacturing, data center, hospitality, healthcare, and life sciences markets.