Mckesson Corp. options tape
Read from CBOE's delayed chain on 23 September 2026, with Mckesson Corp. at $886.47: open interest within 90 days was 3,324 call and 2,475 put contracts, a put/call ratio of 0.74; the day's volume was 190 calls and 166 puts (0.87). The most call open interest sits at the $1,000.00 strike (521 contracts) and the most put open interest at $720.00 (241). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 5.3% of spot. For 16 October 2026, implied volatility was 26.7% at the put 5% below spot and 24.3% at the call 5% above, +2.4 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $1,000.00 | 521 |
| Puts | $720.00 | 241 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for MCK, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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