OITracker Cboe delayed data

Contract OI history

Back to BSX

Jun 17, 2027 EXPIRATION

BSX $35.00 Put

BSX270617P00035000

Latest saved OI6,081Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BSX $35.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6,0823,0410 2026-10-02: 3,365 OI2026-10-05: 3,394 OI2026-10-06: 3,394 OI2026-10-07: 5,038 OI2026-10-08: 5,038 OI2026-10-09: 6,069 OI2026-10-13: 6,082 OI2026-10-14: 6,082 OI2026-10-15: 6,072 OI2026-10-16: 6,073 OI2026-10-21: 6,081 OI2026-10-23: 6,081 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6,0810
Oct 21, 20266,081+8
Oct 16, 20266,073+1
Oct 15, 20266,072-10
Oct 14, 20266,0820
Oct 13, 20266,082+13
Oct 09, 20266,069+1,031
Oct 08, 20265,0380
Oct 07, 20265,038+1,644
Oct 06, 20263,3940
Oct 05, 20263,394+29
Oct 02, 20263,365No prior observation