Public Storage options tape
Read from CBOE's delayed chain on 23 September 2026, with Public Storage at $296.67: open interest within 90 days was 1,026 call and 1,323 put contracts, a put/call ratio of 1.29; the day's volume was 201 calls and 663 puts (3.3). The most call open interest sits at the $310.00 strike (425 contracts) and the most put open interest at $250.00 (393). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 4.8% of spot. For 16 October 2026, implied volatility was 23.5% at the put 5% below spot and 19.3% at the call 5% above, +4.2 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $310.00 | 425 |
| Puts | $250.00 | 393 |
The strike with the most open interest on each side, across expiries within 90 days.
Strikes where the day's volume was at least twice the open interest
| Contract | Volume | Open interest before | Premium traded |
|---|---|---|---|
| 20 November 2026 put at $270.00 | 204 | 0 | $58,140 |
| 20 November 2026 put at $260.00 | 200 | 3 | $34,000 |
Volume of at least 200 contracts and at least twice the open interest, with at least $25,000 of premium at the mid; contracts expiring the same day are left out. Premium is mid price times volume times 100.
Source
CBOE delayed quotes for PSA, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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