OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

B $42.00 Call

B261218C00042000

Latest saved OI525Oct 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
B $42.00 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. 5252620 2026-10-02: 445 OI2026-10-05: 442 OI2026-10-06: 442 OI2026-10-07: 451 OI2026-10-08: 452 OI2026-10-09: 481 OI2026-10-13: 486 OI2026-10-14: 488 OI2026-10-15: 518 OI2026-10-16: 519 OI2026-10-21: 524 OI2026-10-23: 525 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing525+1
Oct 21, 2026524+5
Oct 16, 2026519+1
Oct 15, 2026518+30
Oct 14, 2026488+2
Oct 13, 2026486+5
Oct 09, 2026481+29
Oct 08, 2026452+1
Oct 07, 2026451+9
Oct 06, 20264420
Oct 05, 2026442-3
Oct 02, 2026445No prior observation