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Contract OI history

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Nov 20, 2026 EXPIRATION

BMO $155.00 Put

BMO261120P00155000

Latest saved OI19Oct 21, 2026
Last change0vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
BMO $155.00 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. 1990 2026-10-01: 18 OI2026-10-02: 18 OI2026-10-05: 18 OI2026-10-06: 18 OI2026-10-07: 19 OI2026-10-08: 19 OI2026-10-09: 19 OI2026-10-13: 19 OI2026-10-14: 19 OI2026-10-16: 19 OI2026-10-21: 19 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, 2026Viewing190
Oct 16, 2026190
Oct 14, 2026190
Oct 13, 2026190
Oct 09, 2026190
Oct 08, 2026190
Oct 07, 202619+1
Oct 06, 2026180
Oct 05, 2026180
Oct 02, 2026180
Oct 01, 202618No prior observation