ACGL Open Interest
Arch Capital Group Ltd (ACGL) had 9.61K open option contracts as of Nov 4, 2026: 5.73K calls and 3.88K puts. Open interest fell 10.1% over the past four weeks. The put/call open interest ratio is 0.68, so calls outnumber puts.
Open Interest by Strike
Showing results for ACGL, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for ACGL, 2026-11-20(m), calls & puts
| Call Open Interest Total | |
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| Put Open Interest Total | |
| Open Interest Total | |
| Put-Call Open Interest Ratio |
Highest Open Interest Options
Showing results for ACGL, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for ACGL, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for ACGL, all expirations, calls & puts. View full history
ACGL 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 ACGL have?
Arch Capital had 9.61K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 9.76K contracts.
Is ACGL open interest rising or falling?
Open interest fell 10.1% over the past four weeks. It was 10.69K contracts on Oct 7, 2026. See the ACGL open interest history for a longer view.
What is the ACGL put/call open interest ratio?
The Arch Capital put/call open interest ratio was 0.68 as of Nov 4, 2026. Four weeks earlier it was 0.64.
What is Arch Capital Group Ltd?
Arch Capital Group Ltd is a Bermuda company that writes insurance and reinsurance with operations in the United States, Canada, Europe, Australia, and the United Kingdom.