Northrop Grumman Corp. options tape
Read from CBOE's delayed chain on 23 September 2026, with Northrop Grumman Corp. at $507.78: open interest within 90 days was 5,431 call and 5,980 put contracts, a put/call ratio of 1.1; the day's volume was 621 calls and 394 puts (0.63). The most call open interest sits at the $520.00 strike (574 contracts) and the most put open interest at $515.00 (506). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 6.4% of spot. For 16 October 2026, implied volatility was 28.8% at the put 5% below spot and 29.7% at the call 5% above, -0.9 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $520.00 | 574 |
| Puts | $515.00 | 506 |
The strike with the most open interest on each side, across expiries within 90 days.
Source
CBOE delayed quotes for NOC, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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