BL Open Interest
BlackLine Inc (BL) had 39.66K open option contracts as of Nov 4, 2026: 32.79K calls and 6.87K puts. Open interest fell 1.3% over the past four weeks. The put/call open interest ratio is 0.21, so calls outnumber puts.
Open Interest by Strike
Showing results for BL, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for BL, 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 BL, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for BL, 2026-11-20(m), calls & puts. View all expiries
BL 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 BL have?
BlackLine had 39.66K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 40.19K contracts.
Is BL open interest rising or falling?
Open interest fell 1.3% over the past four weeks. It was 40.17K contracts on Oct 7, 2026. See the BL open interest history for a longer view.
What is the BL put/call open interest ratio?
The BlackLine put/call open interest ratio was 0.21 as of Nov 4, 2026. Four weeks earlier it was 0.20.
What is BlackLine Inc?
BlackLine Inc is engaged in providing financial accounting close solutions delivered as Software as a Service (SaaS).