CIGI Open Interest
Colliers International Group Inc (CIGI) had 3.54K open option contracts as of Nov 4, 2026: 2.18K calls and 1.36K puts. Open interest rose 83.1% over the past four weeks, and is CIGI's highest level in 4 weeks. The put/call open interest ratio is 0.63, so calls outnumber puts.
Open Interest by Strike
Showing results for CIGI, 2026-11-20(m), calls & puts
Open Interest Stats
Showing results for CIGI, 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 CIGI, 2026-11-20(m), calls & puts
Open Interest Total by Expiry
Showing results for CIGI, 2026-11-20(m), calls & puts. View all expiries
Open Interest History
Showing daily totals for CIGI, all expirations, calls & puts. View full history
CIGI 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 CIGI have?
Colliers International had 3.54K open option contracts as of Nov 4, 2026. Over the past 30 days, open interest averaged 2.25K contracts.
Is CIGI open interest rising or falling?
Open interest rose 83.1% over the past four weeks, and is CIGI's highest level in 4 weeks. It was 1.94K contracts on Oct 7, 2026. See the CIGI open interest history for a longer view.
What is the CIGI put/call open interest ratio?
The Colliers International put/call open interest ratio was 0.63 as of Nov 4, 2026. Four weeks earlier it was 1.18.
What is Colliers International Group Inc?
Colliers International Group Inc provides commercial real estate professional services and investment management to corporate and institutional clients across different countries around the world.