814 calls and 812 puts traded on Nov 4, 2026, 1.63K contracts in total. Open interest was 23.16K contracts. Over the past 30 days, volume averaged 795 contracts per day. The MCK option volume chart shows volume by strike and expiration date.

McKesson IV rank is 16, so its 30-day implied volatility of 38.3% is near the bottom of its one-year range. Over the past year it ranged from 20.5% on Nov 26, 2025 to 131.9% on Oct 16, 2026. See the MCK implied volatility history for a longer view.

The McKesson put/call volume ratio was 1.00 on Nov 4, 2026, so calls and puts are about even. The put/call open interest ratio was 0.81. The MCK open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for McKesson options about one week from expiration was $939.05, 12.2% below the $1,069.52 close. The MCK max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 43.9%, options price a move of about ±$64.98 (±6.1%) over the next week, a range of roughly $1,004.54 to $1,134.50 from the Nov 4, 2026 close. The MCK expected move chart shows it for every expiration date.