OLN Open Interest
Olin Corp (OLN) had 37.25K open option contracts as of Nov 4, 2026: 21.67K calls and 15.57K puts. Open interest rose 5.5% over the past four weeks. The put/call open interest ratio is 0.72, so calls outnumber puts.
Open Interest by Strike
Showing results for OLN, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for OLN, 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 OLN, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for OLN, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for OLN, all expirations, calls & puts. View full history
OLN 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 OLN have?
Olin had 37.25K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 34.1K contracts.
Is OLN open interest rising or falling?
Open interest rose 5.5% over the past four weeks. It was 35.29K contracts on Oct 7, 2026. See the OLN open interest history for a longer view.
What is the OLN put/call open interest ratio?
The Olin put/call open interest ratio was 0.72 as of Nov 4, 2026. Four weeks earlier it was 0.57.
What is Olin Corp?
Olin was founded in 1892 and has been publicly listed since 1917.