AON· Aon plc
Open interest · contracts by strike
Spot
331.7
Max Pain
320
Call OI
1,155
Put OI
429
P/C ratio
0.37
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 320
Spot 331.7
380
49
370
79
360
147
350
195
340
531
Call OI
330
39
72
320
66
51
Max pain
310
191
22
Put OI
300
46
290
57
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.