PSA· Public Storage
Open interest · contracts by strike
Spot
318.3
Max Pain
310
Call OI
431
Put OI
492
P/C ratio
1.14
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 310
Spot 318.3
360
350
12
340
87
330
88
320
151
Call OI
310
88
63
Max pain
300
289
14
Put OI
290
61
280
41
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.