OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

CAL $15.00 Call

CAL261218C00015000

Latest saved OI523Oct 23, 2026
Last change+72vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CAL $15.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5232610 2026-10-02: 381 OI2026-10-05: 381 OI2026-10-06: 381 OI2026-10-07: 381 OI2026-10-08: 381 OI2026-10-09: 383 OI2026-10-13: 383 OI2026-10-14: 411 OI2026-10-16: 451 OI2026-10-20: 451 OI2026-10-23: 523 OI Oct 02, 2026Oct 23, 2026

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

CAL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing523+72
Oct 20, 20264510
Oct 16, 2026451+40
Oct 14, 2026411+28
Oct 13, 20263830
Oct 09, 2026383+2
Oct 08, 20263810
Oct 07, 20263810
Oct 06, 20263810
Oct 05, 20263810
Oct 02, 2026381No prior observation