OITracker Cboe delayed data

Contract OI history

Back to ZETA

Jan 21, 2028 EXPIRATION

ZETA $20.00 Put

ZETA280121P00020000

Latest saved OI540Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZETA $20.00 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. 5592790 2026-10-02: 559 OI2026-10-05: 559 OI2026-10-06: 536 OI2026-10-07: 536 OI2026-10-08: 536 OI2026-10-09: 543 OI2026-10-13: 539 OI2026-10-14: 539 OI2026-10-15: 537 OI2026-10-16: 540 OI2026-10-21: 540 OI2026-10-23: 540 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, 20265400
Oct 21, 2026Viewing5400
Oct 16, 2026540+3
Oct 15, 2026537-2
Oct 14, 20265390
Oct 13, 2026539-4
Oct 09, 2026543+7
Oct 08, 20265360
Oct 07, 20265360
Oct 06, 2026536-23
Oct 05, 20265590
Oct 02, 2026559No prior observation