MCK Unusual Option Activity
McKesson Corporation (MCK) option volume on Nov 4, 2026 was 7.0% of open interest, well above the 20-day average of 4.0%. Calls made up 50.1% of the volume. Relative to open interest, that was MCK's most active day in 4 weeks.
MCK 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 MCK seeing unusual options activity?
On Nov 4, 2026, McKesson options traded 1.63K contracts against 23.16K open, a volume to open interest ratio of 0.07, well above its 20-day average. The table above lists the contracts with the highest ratios.
Are MCK traders trading more calls or puts?
Calls made up 50.1% of McKesson option volume on Nov 4, 2026, a put/call ratio of 1.00, so calls and puts are about even. The MCK option volume chart shows calls and puts by strike.
What is McKesson Corporation?
McKesson is one of three leading pharmaceutical wholesalers in the US engaged in sourcing and distributing branded, generic, and specialty pharmaceutical products to pharmacies (retail chains, independent, and mail order), hospitals networks, and healthcare providers.