Steris plc options tape
Read from CBOE's delayed chain on 23 September 2026, with Steris plc at $206.97: open interest within 90 days was 546 call and 625 put contracts, a put/call ratio of 1.14; the day's volume was 141 calls and 24 puts (0.17). The most call open interest sits at the $270.00 strike (330 contracts) and the most put open interest at $210.00 (516). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 5.1% of spot. For 16 October 2026, implied volatility was 28.5% at the put 5% below spot and 22.4% at the call 5% above, +6.2 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $270.00 | 330 |
| Puts | $210.00 | 516 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for STE, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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