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Contract OI history

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Dec 18, 2026 EXPIRATION

IIPR $40.00 Put

IIPR261218P00040000

Latest saved OI166Oct 20, 2026
Last change+1vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
IIPR $40.00 put open interest history 9 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 166830 2026-10-02: 160 OI2026-10-05: 164 OI2026-10-06: 164 OI2026-10-07: 164 OI2026-10-08: 164 OI2026-10-09: 164 OI2026-10-13: 165 OI2026-10-16: 165 OI2026-10-20: 166 OI Oct 02, 2026Oct 20, 2026

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

IIPR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing166+1
Oct 16, 20261650
Oct 13, 2026165+1
Oct 09, 20261640
Oct 08, 20261640
Oct 07, 20261640
Oct 06, 20261640
Oct 05, 2026164+4
Oct 02, 2026160No prior observation