COST Unusual Option Activity
Costco Wholesale Corp (COST) option volume on Nov 4, 2026 was 13.4% of open interest, in line with the 20-day average of 12.6%. Calls made up 50.8% of the volume.
COST Unusual Options FAQ
What makes option activity unusual?
Option activity is usually called unusual when a contract trades much more volume than its open interest, which can mean traders are opening new positions.
Is COST seeing unusual options activity?
On Nov 4, 2026, Costco Wholesale options traded 40.42K contracts against 301.16K open, a volume to open interest ratio of 0.13, in line with its 20-day average. The table above lists the contracts with the highest ratios.
Are COST traders trading more calls or puts?
Calls made up 50.8% of Costco Wholesale option volume on Nov 4, 2026, a put/call ratio of 0.97, so calls and puts are about even. The COST option volume chart shows calls and puts by strike.
What is Costco Wholesale Corp?
Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices.