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Contract OI history

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Jan 21, 2028 EXPIRATION

ZETA $35.00 Put

ZETA280121P00035000

Latest saved OI595Oct 23, 2026
Last change+10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ZETA $35.00 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. 6763380 2026-10-02: 676 OI2026-10-05: 667 OI2026-10-06: 612 OI2026-10-07: 612 OI2026-10-08: 612 OI2026-10-09: 602 OI2026-10-13: 583 OI2026-10-14: 583 OI2026-10-15: 583 OI2026-10-16: 583 OI2026-10-21: 585 OI2026-10-23: 595 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, 2026595+10
Oct 21, 2026Viewing585+2
Oct 16, 20265830
Oct 15, 20265830
Oct 14, 20265830
Oct 13, 2026583-19
Oct 09, 2026602-10
Oct 08, 20266120
Oct 07, 20266120
Oct 06, 2026612-55
Oct 05, 2026667-9
Oct 02, 2026676No prior observation