CSGP· CoStar Group
Open interest · contracts by strike
Spot
28.3
Max Pain
30
Call OI
583
Put OI
1,706
P/C ratio
2.93
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 30
Spot 28.3
30
931
569
Call OI
25
775
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.