CRL Unusual Option Activity
Charles River Laboratories International Inc (CRL) option volume on Nov 4, 2026 was 31.1% of open interest, well above the 20-day average of 9.8%. Calls made up 54.1% of the volume.
CRL 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 CRL seeing unusual options activity?
On Nov 4, 2026, Charles River Laboratories International options traded 4.45K contracts against 14.29K open, a volume to open interest ratio of 0.31, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are CRL traders trading more calls or puts?
Calls made up 54.1% of Charles River Laboratories International option volume on Nov 4, 2026, a put/call ratio of 0.85, so calls outnumber puts. The CRL option volume chart shows calls and puts by strike.
What is Charles River Laboratories International Inc?
Charles River Laboratories was founded in 1947 and is a leading provider of drug discovery and development services.