Ameren Corp. options tape
Read from CBOE's delayed chain on 23 September 2026, with Ameren Corp. at $101.66: open interest within 90 days was 4,445 call and 605 put contracts, a put/call ratio of 0.14; the day's volume was 116 calls and 45 puts (0.39). The most call open interest sits at the $110.00 strike (2,135 contracts) and the most put open interest at $100.00 (241). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 4.4% of spot. For 16 October 2026, implied volatility was 25.8% at the put 5% below spot and 20.1% at the call 5% above, +5.7 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $110.00 | 2,135 |
| Puts | $100.00 | 241 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for AEE, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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