STMicroelectronics N.V. options tape
Read from CBOE's delayed chain on 26 September 2026, with STMicroelectronics N.V. at $52.04: open interest within 90 days was 87,134 call and 48,007 put contracts, a put/call ratio of 0.55; the day's volume was 2,034 calls and 1,903 puts (0.94). The most call open interest sits at the $55.00 strike (18,420 contracts) and the most put open interest at $50.00 (4,996). The at-the-money straddle for 2 October 2026, 6 days out, was priced at 5.2% of spot. For 16 October 2026, implied volatility was 47.7% at the put 5% below spot and 49.8% at the call 5% above, -2.1 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $55.00 | 18,420 |
| Puts | $50.00 | 4,996 |
The strike with the most open interest on each side, across expiries within 90 days.
Open-interest builds against the previous day appear from the second daily read of this name.
Source
CBOE delayed quotes for STM, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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