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Contract OI history

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Jan 21, 2028 EXPIRATION

ZETA $12.50 Put

ZETA280121P00012500

Latest saved OI1,300Oct 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 $12.50 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. 1,3216600 2026-10-02: 1,321 OI2026-10-05: 1,321 OI2026-10-06: 1,321 OI2026-10-07: 1,321 OI2026-10-08: 1,321 OI2026-10-09: 1,320 OI2026-10-13: 1,309 OI2026-10-14: 1,309 OI2026-10-15: 1,309 OI2026-10-16: 1,310 OI2026-10-21: 1,300 OI2026-10-23: 1,300 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, 20261,3000
Oct 21, 2026Viewing1,300-10
Oct 16, 20261,310+1
Oct 15, 20261,3090
Oct 14, 20261,3090
Oct 13, 20261,309-11
Oct 09, 20261,320-1
Oct 08, 20261,3210
Oct 07, 20261,3210
Oct 06, 20261,3210
Oct 05, 20261,3210
Oct 02, 20261,321No prior observation