Arch Capital Group Ltd. options tape
Read from CBOE's delayed chain on 23 September 2026, with Arch Capital Group Ltd. at $94.95: open interest within 90 days was 3,152 call and 2,167 put contracts, a put/call ratio of 0.69; the day's volume was 116 calls and 381 puts (3.28). The most call open interest sits at the $105.00 strike (1,288 contracts) and the most put open interest at $95.00 (893). The at-the-money straddle for 16 October 2026, 23 days out, was priced at 4.2% of spot. For 16 October 2026, implied volatility was 22.4% at the put 5% below spot and 22.7% at the call 5% above, -0.3 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $105.00 | 1,288 |
| Puts | $95.00 | 893 |
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 |
|---|---|---|
| 20 November 2026 put at $95.00 | 420 | +405 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for ACGL, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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