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Contract OI history

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Jan 15, 2027 EXPIRATION

BAX $27.50 Put

BAX270115P00027500

Latest saved OI352Oct 23, 2026
Last change+16vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BAX $27.50 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. 3521760 2026-10-02: 336 OI2026-10-05: 336 OI2026-10-06: 336 OI2026-10-07: 336 OI2026-10-08: 336 OI2026-10-09: 336 OI2026-10-13: 336 OI2026-10-14: 336 OI2026-10-15: 336 OI2026-10-16: 336 OI2026-10-21: 336 OI2026-10-23: 352 OI Oct 02, 2026Oct 23, 2026

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

BAX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing352+16
Oct 21, 20263360
Oct 16, 20263360
Oct 15, 20263360
Oct 14, 20263360
Oct 13, 20263360
Oct 09, 20263360
Oct 08, 20263360
Oct 07, 20263360
Oct 06, 20263360
Oct 05, 20263360
Oct 02, 2026336No prior observation