Nisource Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Nisource Inc. at $39.88: open interest within 90 days was 1,871 call and 834 put contracts, a put/call ratio of 0.45; the day's volume was 1 calls and 18 puts (18.0). The most call open interest sits at the $45.00 strike (1,104 contracts) and the most put open interest at $40.00 (529). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 4.8% of spot. For 16 October 2026, implied volatility was 19.7% at the put 5% below spot and 26.5% at the call 5% above, -6.9 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $45.00 | 1,104 |
| Puts | $40.00 | 529 |
The strike with the most open interest on each side, across expiries within 90 days.
Open interest built since 22 September 2026
| Contract | Open interest now | Change |
|---|---|---|
| 16 October 2026 call at $45.00 | 947 | +735 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for NI, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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