ERO Open Interest
Ero Copper Corp (ERO) had 78.06K open option contracts as of Nov 4, 2026: 60.95K calls and 17.11K puts. Open interest fell 20.6% over the past four weeks. The put/call open interest ratio is 0.28, so calls outnumber puts.
Open Interest by Strike
Showing results for ERO, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ERO, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
|---|---|
| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for ERO, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ERO, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ERO, all expirations, calls & puts. View full history
ERO 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 ERO have?
Ero Copper had 78.06K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 89.41K contracts.
Is ERO open interest rising or falling?
Open interest fell 20.6% over the past four weeks. It was 98.33K contracts on Oct 7, 2026. See the ERO open interest history for a longer view.
What is the ERO put/call open interest ratio?
The Ero Copper put/call open interest ratio was 0.28 as of Nov 4, 2026. Four weeks earlier it was 0.19.
What is Ero Copper Corp?
Ero Copper Corp is a high-margin, high-growth copper producer with operations in Brazil.