ECL· Ecolab
Open interest · contracts by strike
Spot
278.6
Max Pain
270
Call OI
3,595
Put OI
4,251
P/C ratio
1.18
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 270
Spot 278.6
320
1,104
Call OI
310
97
300
655
290
495
280
131
522
270
1,634
534
Put OI
260
1,277
135
250
588
240
613
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.