BIO Unusual Option Activity
Bio-Rad Laboratories Inc.Class A (BIO) option volume on Nov 4, 2026 was 4.8% of open interest, well below the 20-day average of 42.2%. Calls made up 63.2% of the volume.
BIO 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 BIO seeing unusual options activity?
On Nov 4, 2026, Bio-Rad Laboratories Inc.Class A options traded 19 contracts against 400 open, a volume to open interest ratio of 0.05, well below its 20-day average. The table above lists the contracts with the highest ratios.
Are BIO traders trading more calls or puts?
Calls made up 63.2% of Bio-Rad Laboratories Inc.Class A option volume on Nov 4, 2026, a put/call ratio of 0.58, so calls outnumber puts. The BIO option volume chart shows calls and puts by strike.
What is Bio-Rad Laboratories Inc.Class A?
Bio-Rad Laboratories, headquartered in Hercules, California, develops, manufactures, and sells products and solutions for the clinical diagnostics and life sciences markets.