Smurfit Westrock plc options tape
Read from CBOE's delayed chain on 23 September 2026, with Smurfit Westrock plc at $45.41: open interest within 90 days was 2,570 call and 1,115 put contracts, a put/call ratio of 0.43; the day's volume was 5,553 calls and 551 puts (0.1). The most call open interest sits at the $50.00 strike (1,592 contracts) and the most put open interest at $40.00 (484). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 7.8% of spot. For 16 October 2026, implied volatility was 36.8% at the put 5% below spot and 36.5% at the call 5% above, +0.2 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $50.00 | 1,592 |
| Puts | $40.00 | 484 |
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 |
|---|---|---|---|
| 16 October 2026 call at $50.00 | 5,236 | 1,569 | $209,440 |
| 16 October 2026 put at $45.00 | 507 | 150 | $74,782 |
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 SW, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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