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Contract OI history

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Jan 21, 2028 EXPIRATION

ZETA $40.00 Put

ZETA280121P00040000

Latest saved OI351Oct 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 $40.00 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. 3511750 2026-10-02: 10 OI2026-10-05: 10 OI2026-10-06: 209 OI2026-10-07: 343 OI2026-10-08: 343 OI2026-10-09: 349 OI2026-10-13: 349 OI2026-10-14: 349 OI2026-10-15: 349 OI2026-10-16: 349 OI2026-10-21: 351 OI2026-10-23: 351 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, 20263510
Oct 21, 2026Viewing351+2
Oct 16, 20263490
Oct 15, 20263490
Oct 14, 20263490
Oct 13, 20263490
Oct 09, 2026349+6
Oct 08, 20263430
Oct 07, 2026343+134
Oct 06, 2026209+199
Oct 05, 2026100
Oct 02, 202610No prior observation