OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

BAX $20.00 Call

BAX280121C00020000

Latest saved OI4,320Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BAX $20.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4,3862,1930 2026-10-02: 4,386 OI2026-10-05: 4,386 OI2026-10-06: 4,386 OI2026-10-07: 4,386 OI2026-10-08: 4,386 OI2026-10-09: 4,386 OI2026-10-13: 4,383 OI2026-10-14: 4,308 OI2026-10-15: 4,308 OI2026-10-16: 4,318 OI2026-10-21: 4,321 OI2026-10-23: 4,320 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, 2026Viewing4,320-1
Oct 21, 20264,321+3
Oct 16, 20264,318+10
Oct 15, 20264,3080
Oct 14, 20264,308-75
Oct 13, 20264,383-3
Oct 09, 20264,3860
Oct 08, 20264,3860
Oct 07, 20264,3860
Oct 06, 20264,3860
Oct 05, 20264,3860
Oct 02, 20264,386No prior observation