EFX Open Interest
Equifax Incorporated (EFX) had 9.54K open option contracts as of Nov 4, 2026: 4.1K calls and 5.44K puts. Open interest rose 20.7% over the past four weeks, and is EFX's highest level in 12 weeks. The put/call open interest ratio is 1.33, so puts outnumber calls.
Open Interest by Strike
Showing results for EFX, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for EFX, 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 EFX, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for EFX, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for EFX, all expirations, calls & puts. View full history
EFX 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 EFX have?
Equifax had 9.54K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 8.35K contracts.
Is EFX open interest rising or falling?
Open interest rose 20.7% over the past four weeks, and is EFX's highest level in 12 weeks. It was 7.9K contracts on Oct 7, 2026. See the EFX open interest history for a longer view.
What is the EFX put/call open interest ratio?
The Equifax put/call open interest ratio was 1.33 as of Nov 4, 2026. Four weeks earlier it was 2.00.
What is Equifax Incorporated?
Along with Experian and TransUnion, Equifax is one of the leading credit bureaus in the United States.