OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

ZETA $20.00 Call

ZETA280121C00020000

Latest saved OI4,994Oct 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
ZETA $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. 5,8642,9320 2026-10-02: 5,864 OI2026-10-05: 5,858 OI2026-10-06: 5,656 OI2026-10-07: 5,629 OI2026-10-08: 5,629 OI2026-10-09: 5,429 OI2026-10-13: 5,457 OI2026-10-14: 5,457 OI2026-10-15: 5,464 OI2026-10-16: 5,025 OI2026-10-21: 4,993 OI2026-10-23: 4,994 OI Oct 02, 2026Oct 23, 2026

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

ZETA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20264,994+1
Oct 21, 2026Viewing4,993-32
Oct 16, 20265,025-439
Oct 15, 20265,464+7
Oct 14, 20265,4570
Oct 13, 20265,457+28
Oct 09, 20265,429-200
Oct 08, 20265,6290
Oct 07, 20265,629-27
Oct 06, 20265,656-202
Oct 05, 20265,858-6
Oct 02, 20265,864No prior observation