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Contract OI history

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Nov 20, 2026 EXPIRATION

BMO $165.00 Put

BMO261120P00165000

Latest saved OI40Oct 21, 2026
Last change+16vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
BMO $165.00 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. 40200 2026-10-01: 19 OI2026-10-02: 20 OI2026-10-05: 20 OI2026-10-06: 20 OI2026-10-07: 20 OI2026-10-08: 20 OI2026-10-09: 20 OI2026-10-13: 20 OI2026-10-14: 23 OI2026-10-16: 24 OI2026-10-21: 40 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, 2026Viewing40+16
Oct 16, 202624+1
Oct 14, 202623+3
Oct 13, 2026200
Oct 09, 2026200
Oct 08, 2026200
Oct 07, 2026200
Oct 06, 2026200
Oct 05, 2026200
Oct 02, 202620+1
Oct 01, 202619No prior observation