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Contract OI history

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Dec 18, 2026 EXPIRATION

FIBK $35.00 Put

FIBK261218P00035000

Latest saved OI16Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
FIBK $35.00 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. 1680 2026-10-09: 14 OI2026-10-13: 16 OI2026-10-14: 16 OI2026-10-16: 16 OI2026-10-20: 16 OI2026-10-23: 16 OI Oct 09, 2026Oct 23, 2026

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

FIBK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing160
Oct 20, 2026160
Oct 16, 2026160
Oct 14, 2026160
Oct 13, 202616+2
Oct 09, 202614No prior observation