CNA Open Interest
CNA Financial Corporation (CNA) had 905 open option contracts as of Nov 4, 2026: 447 calls and 458 puts. Open interest fell 49.0% over the past four weeks. The put/call open interest ratio is 1.02, so calls and puts are about even.
Open Interest by Strike
Showing results for CNA, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CNA, 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 CNA, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CNA, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CNA, all expirations, calls & puts. View full history
CNA 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 CNA have?
CNA Financial had 905 open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 1.2K contracts.
Is CNA open interest rising or falling?
Open interest fell 49.0% over the past four weeks. It was 1.78K contracts on Oct 7, 2026. See the CNA open interest history for a longer view.
What is the CNA put/call open interest ratio?
The CNA Financial put/call open interest ratio was 1.02 as of Nov 4, 2026. Four weeks earlier it was 0.36.
What is CNA Financial Corporation?
CNA Financial Corporation (CNAF) is an insurance holding company that provides commercial property and casualty insurance.