Boston Scientific Corp. options tape
Read from CBOE's delayed chain on 23 September 2026, with Boston Scientific Corp. at $44.85: open interest within 90 days was 395,020 call and 134,028 put contracts, a put/call ratio of 0.34; the day's volume was 10,951 calls and 6,295 puts (0.57). The most call open interest sits at the $67.50 strike (114,077 contracts) and the most put open interest at $40.00 (68,508). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 3.0% of spot. For 16 October 2026, implied volatility was 36.4% at the put 5% below spot and 35.7% at the call 5% above, +0.7 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $67.50 | 114,077 |
| Puts | $40.00 | 68,508 |
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 |
|---|---|---|---|
| 30 October 2026 put at $40.00 | 904 | 348 | $70,060 |
| 9 October 2026 call at $46.50 | 653 | 7 | $55,505 |
| 2 October 2026 call at $45.50 | 532 | 50 | $46,550 |
| 2 October 2026 call at $47.50 | 1,046 | 19 | $31,380 |
| 2 October 2026 put at $42.50 | 1,055 | 196 | $29,012 |
| 2 October 2026 put at $43.00 | 743 | 284 | $27,862 |
| 2 October 2026 call at $46.50 | 497 | 63 | $26,092 |
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 |
|---|---|---|
| 20 November 2026 call at $45.00 | 7,672 | +2,699 |
| 16 October 2026 call at $43.50 | 2,393 | +2,393 |
| 16 October 2026 put at $38.00 | 2,000 | +2,000 |
| 23 October 2026 put at $38.00 | 1,414 | +1,328 |
| 2 October 2026 call at $44.50 | 1,244 | +1,232 |
| 2 October 2026 call at $45.00 | 971 | +818 |
| 16 October 2026 call at $47.00 | 507 | +507 |
| 25 September 2026 put at $43.00 | 1,601 | +495 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for BSX, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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