PSA· Public Storage
Open interest · contracts by strike
Spot
296.5
Max Pain
310
Call OI
1,625
Put OI
1,254
P/C ratio
0.77
Open interest by strike (contracts)
Call OIPut OISpot / max pain
Max pain 310
Spot 296.5
340
124
321
330
36
313
320
64
429
Call OI
310
127
257
Max pain
300
203
61
290
105
91
280
209
143
270
134
260
252
Put OI
Open interest by strike with the max-pain level marked, per expiry — heuristics over CBOE delayed chains, same strike band as the GEX profile.
History
PSA open interest, night by night.
Total call and put contracts held on each recorded session — the level the strike profile above is a snapshot of.
10 Jun → 11 Sep
OI totals over time
Contracts outstanding, summed over the whole captured chain — every listed expiry and strike, wider than the strike band and single expiry shown in the profile above.
call OI, contractsput OI, contracts
One reading per session, captured nightly after the close, 10 Jun → 11 Sep, over CBOE delayed (~15-min) chains, computed across the full listed chain. Gaps are weekends, holidays and sessions a capture missed; any reading can be absent on a session that was captured, and the series is broken rather than drawn through it.