International Business Machines Corp. options tape
Read from CBOE's delayed chain on 23 September 2026, with International Business Machines Corp. at $231.91: open interest within 90 days was 149,176 call and 105,160 put contracts, a put/call ratio of 0.7; the day's volume was 24,662 calls and 6,699 puts (0.27). The most call open interest sits at the $250.00 strike (12,396 contracts) and the most put open interest at $220.00 (11,649). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 2.7% of spot. For 16 October 2026, implied volatility was 33.5% at the put 5% below spot and 34.4% at the call 5% above, -0.9 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $250.00 | 12,396 |
| Puts | $220.00 | 11,649 |
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 |
|---|---|---|---|
| 18 December 2026 call at $255.00 | 1,678 | 197 | $1.6 million |
| 2 October 2026 call at $240.00 | 1,220 | 436 | $281,210 |
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 |
|---|---|---|
| 25 September 2026 call at $260.00 | 2,218 | +788 |
| 25 September 2026 call at $232.50 | 894 | +642 |
| 18 December 2026 call at $250.00 | 2,565 | +628 |
| 25 September 2026 call at $240.00 | 1,955 | +607 |
| 25 September 2026 call at $245.00 | 2,077 | +570 |
| 25 September 2026 put at $222.50 | 1,289 | +556 |
| 25 September 2026 call at $250.00 | 2,346 | +534 |
| 25 September 2026 call at $242.50 | 1,233 | +528 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for IBM, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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