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Options/OI/MCK

MCK· McKesson

Open interest · contracts by strike
as of 2026-11-05
Gamma (GEX) Full dossier

For the 20 Nov 2026 expiry, MCK's max pain is 980 against a spot of 1,072, 8.6% below it. Put open interest is 0.60 times call open interest across the shown strikes (859 puts, 1,442 calls). The largest call position is at 1,030 and the largest put position at 970. Max pain is a heuristic for where option holders lose most at expiry, not a price target.

Spot
1,072
Max Pain
980
Call OI
1,442
Put OI
859
P/C ratio
0.60

Open interest by strike (contracts)

Call OIPut OISpot / max pain
Max pain 980
Spot 1,072
1,220
1,200
23
1,180
11
1,160
19
1,140
41
1,120
97
1,100
61
1,080
10
24
1,070
14
33
1,060
11
25
1,050
99
1,040
27
108
1,030
20
215
Call OI
1,020
53
73
1,010
11
48
1,000
110
105
990
119
62
980
88
Max pain
970
146
37
Put OI
960
53
94
950
107
53
940
61
59
930
25
36
920
72
30

Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.

History

MCK open interest, night by night.

Total call and put contracts held on each recorded session — the level the strike profile above is a snapshot of.

9 Jun → 5 Nov
OI totals over time

Contracts outstanding, summed over the whole captured chain — every listed expiry and strike, wider than the strike band and single expiry shown in the profile above.

call OI, contractsput OI, contracts

One reading per session, captured nightly after the close, 9 Jun → 5 Nov, over CBOE delayed (~15-min) chains, computed across the full listed chain. Gaps are weekends, holidays and sessions a capture missed; any reading can be absent on a session that was captured, and the series is broken rather than drawn through it.