Phillips 66 options tape
Read from CBOE's delayed chain on 23 September 2026, with Phillips 66 at $262.49: open interest within 90 days was 21,664 call and 25,497 put contracts, a put/call ratio of 1.18; the day's volume was 2,951 calls and 1,470 puts (0.5). The most call open interest sits at the $280.00 strike (3,110 contracts) and the most put open interest at $220.00 (4,700). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 3.5% of spot. For 16 October 2026, implied volatility was 43.0% at the put 5% below spot and 42.2% at the call 5% above, +0.8 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $280.00 | 3,110 |
| Puts | $220.00 | 4,700 |
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 |
|---|---|---|---|
| 18 December 2026 call at $230.00 | 865 | 277 | $3.7 million |
| 9 October 2026 put at $230.00 | 222 | 10 | $25,530 |
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.
Open interest built since 22 September 2026
| Contract | Open interest now | Change |
|---|---|---|
| 25 September 2026 put at $250.00 | 1,165 | +1,061 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for PSX, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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