GSK plc options tape
Read from CBOE's delayed chain on 26 September 2026, with GSK plc at $49.20: open interest within 90 days was 13,632 call and 4,986 put contracts, a put/call ratio of 0.37; the day's volume was 200 calls and 232 puts (1.16). The most call open interest sits at the $60.00 strike (5,266 contracts) and the most put open interest at $50.00 (1,644). The at-the-money straddle for 2 October 2026, 6 days out, was priced at 2.7% of spot. For 16 October 2026, implied volatility was 24.5% at the put 5% below spot and 25.2% at the call 5% above, -0.7 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $60.00 | 5,266 |
| Puts | $50.00 | 1,644 |
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 GSK, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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