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Contract OI history

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Jan 21, 2028 EXPIRATION

JACK $12.50 Put

JACK280121P00012500

Latest saved OI104Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
JACK $12.50 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 104520 2026-10-09: 103 OI2026-10-13: 103 OI2026-10-14: 103 OI2026-10-16: 103 OI2026-10-20: 104 OI2026-10-23: 104 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

JACK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1040
Oct 20, 2026104+1
Oct 16, 20261030
Oct 14, 20261030
Oct 13, 20261030
Oct 09, 2026103No prior observation