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Contract OI history

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Jan 15, 2027 EXPIRATION

BMO $170.00 Put

BMO270115P00170000

Latest saved OI85Oct 21, 2026
Last change-7vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
BMO $170.00 put open interest history 11 saved observations from 2026-10-01 to 2026-10-21. Exact values and changes are listed in the table below. 92460 2026-10-01: 92 OI2026-10-02: 92 OI2026-10-05: 92 OI2026-10-06: 92 OI2026-10-07: 92 OI2026-10-08: 92 OI2026-10-09: 92 OI2026-10-13: 92 OI2026-10-14: 92 OI2026-10-16: 92 OI2026-10-21: 85 OI Oct 01, 2026Oct 21, 2026

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

BMO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing85-7
Oct 16, 2026920
Oct 14, 2026920
Oct 13, 2026920
Oct 09, 2026920
Oct 08, 2026920
Oct 07, 2026920
Oct 06, 2026920
Oct 05, 2026920
Oct 02, 2026920
Oct 01, 202692No prior observation