Interactive Brokers Group, Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Interactive Brokers Group, Inc. at $89.93: open interest within 90 days was 29,350 call and 19,373 put contracts, a put/call ratio of 0.66; the day's volume was 237 calls and 1,700 puts (7.17). The most call open interest sits at the $90.00 strike (9,419 contracts) and the most put open interest at $93.00 (3,793). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 3.4% of spot. For 16 October 2026, implied volatility was 41.9% at the put 5% below spot and 40.3% at the call 5% above, +1.5 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $90.00 | 9,419 |
| Puts | $93.00 | 3,793 |
The strike with the most open interest on each side, across expiries within 90 days.
Strikes where the day's volume was at least twice the open interest
| Contract | Volume | Open interest before | Premium traded |
|---|---|---|---|
| 16 October 2026 put at $84.00 | 668 | 35 | $95,190 |
Volume of at least 200 contracts and at least twice the open interest, with at least $25,000 of premium at the mid; contracts expiring the same day are left out. Premium is mid price times volume times 100.
Open interest built since 22 September 2026
| Contract | Open interest now | Change |
|---|---|---|
| 9 October 2026 call at $101.00 | 5,097 | +5,091 |
| 16 October 2026 put at $93.00 | 2,226 | +2,226 |
| 9 October 2026 put at $93.00 | 1,402 | +1,399 |
| 16 October 2026 call at $95.00 | 1,566 | +730 |
| 16 October 2026 put at $91.00 | 540 | +540 |
| 16 October 2026 call at $94.00 | 361 | +361 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for IBKR, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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