Cboe Global Markets, Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Cboe Global Markets, Inc. at $265.47: open interest within 90 days was 5,815 call and 7,333 put contracts, a put/call ratio of 1.26; the day's volume was 566 calls and 338 puts (0.6). The most call open interest sits at the $300.00 strike (677 contracts) and the most put open interest at $270.00 (1,036). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 2.9% of spot. For 16 October 2026, implied volatility was 35.2% at the put 5% below spot and 32.1% at the call 5% above, +3.1 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $300.00 | 677 |
| Puts | $270.00 | 1,036 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for CBOE, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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