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Contract OI history

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Nov 06, 2026 EXPIRATION

ZETA $28.50 Put

ZETA261106P00028500

Latest saved OI39Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZETA $28.50 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. 49240 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 42 OI2026-10-07: 47 OI2026-10-08: 47 OI2026-10-09: 49 OI2026-10-13: 45 OI2026-10-14: 45 OI2026-10-15: 45 OI2026-10-16: 45 OI2026-10-21: 45 OI2026-10-23: 39 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, 202639-6
Oct 21, 2026Viewing450
Oct 16, 2026450
Oct 15, 2026450
Oct 14, 2026450
Oct 13, 202645-4
Oct 09, 202649+2
Oct 08, 2026470
Oct 07, 202647+5
Oct 06, 202642+41
Oct 05, 202610
Oct 02, 20261No prior observation