WST Unusual Option Activity
West Pharmaceutical Services Inc (WST) option volume on Nov 4, 2026 was 12.4% of open interest, well above the 20-day average of 5.5%. Calls made up 56.4% of the volume.
WST 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 WST seeing unusual options activity?
On Nov 4, 2026, West Pharmaceutical Services options traded 796 contracts against 6.4K open, a volume to open interest ratio of 0.12, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are WST traders trading more calls or puts?
Calls made up 56.4% of West Pharmaceutical Services option volume on Nov 4, 2026, a put/call ratio of 0.77, so calls outnumber puts. The WST option volume chart shows calls and puts by strike.
What is West Pharmaceutical Services Inc?
West Pharmaceutical Services is based in Pennsylvania and is a key supplier to firms in the pharmaceutical, biotechnology, and generic drug industries.