Intuitive Surgical Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Intuitive Surgical Inc. at $401.03: open interest within 90 days was 31,473 call and 26,502 put contracts, a put/call ratio of 0.84; the day's volume was 2,041 calls and 1,256 puts (0.62). The most call open interest sits at the $400.00 strike (3,183 contracts) and the most put open interest at $350.00 (3,701). 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 33.2% at the put 5% below spot and 32.7% at the call 5% above, +0.6 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $400.00 | 3,183 |
| Puts | $350.00 | 3,701 |
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 |
|---|---|---|---|
| 9 October 2026 call at $460.00 | 312 | 0 | $81,120 |
| 25 September 2026 call at $410.00 | 320 | 115 | $80,000 |
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 |
|---|---|---|
| 16 October 2026 call at $400.00 | 998 | +521 |
| 20 November 2026 put at $365.00 | 380 | +337 |
| 25 September 2026 put at $380.00 | 308 | +263 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for ISRG, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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