S&P Global Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with S&P Global Inc. at $403.03: open interest within 90 days was 7,054 call and 9,866 put contracts, a put/call ratio of 1.4; the day's volume was 156 calls and 1,241 puts (7.96). The most call open interest sits at the $410.00 strike (841 contracts) and the most put open interest at $400.00 (1,204). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 2.5% of spot. For 16 October 2026, implied volatility was 27.9% at the put 5% below spot and 26.2% at the call 5% above, +1.8 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $410.00 | 841 |
| Puts | $400.00 | 1,204 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for SPGI, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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