PFE· Pfizer
Open interest · contracts by strike
Spot
24.1
Max Pain
24.5
Call OI
33,837
Put OI
17,434
P/C ratio
0.52
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 24.5
Spot 24.1
27.5
27
3,431
26.5
4,080
26
2,153
25.5
2,103
25
3,494
9,648
24.5
5,866
10,063
Call OI
24
4,851
1,705
23.5
1,139
23
1,257
22.5
22
21.5
21
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.