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Contract OI history

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Dec 18, 2026 EXPIRATION

BMO $150.00 Put

BMO261218P00150000

Latest saved OI12Oct 21, 2026
Last change+1vs previous saved observation
Saved market days11Oct 01, 2026 onwards
Daily open interest Hover a point for its date and OI
BMO $150.00 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. 1890 2026-10-01: 16 OI2026-10-02: 18 OI2026-10-05: 18 OI2026-10-06: 18 OI2026-10-07: 13 OI2026-10-08: 13 OI2026-10-09: 13 OI2026-10-13: 11 OI2026-10-14: 11 OI2026-10-16: 11 OI2026-10-21: 12 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, 2026Viewing12+1
Oct 16, 2026110
Oct 14, 2026110
Oct 13, 202611-2
Oct 09, 2026130
Oct 08, 2026130
Oct 07, 202613-5
Oct 06, 2026180
Oct 05, 2026180
Oct 02, 202618+2
Oct 01, 202616No prior observation