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Contract OI history

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Jan 21, 2028 EXPIRATION

ZETA $17.50 Put

ZETA280121P00017500

Latest saved OI515Oct 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 $17.50 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. 5152570 2026-10-02: 462 OI2026-10-05: 460 OI2026-10-06: 460 OI2026-10-07: 460 OI2026-10-08: 460 OI2026-10-09: 460 OI2026-10-13: 458 OI2026-10-14: 458 OI2026-10-15: 458 OI2026-10-16: 458 OI2026-10-21: 515 OI2026-10-23: 515 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, 20265150
Oct 21, 2026Viewing515+57
Oct 16, 20264580
Oct 15, 20264580
Oct 14, 20264580
Oct 13, 2026458-2
Oct 09, 20264600
Oct 08, 20264600
Oct 07, 20264600
Oct 06, 20264600
Oct 05, 2026460-2
Oct 02, 2026462No prior observation