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Contract OI history

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Dec 18, 2026 EXPIRATION

BMO $185.00 Call

BMO261218C00185000

Latest saved OI229Oct 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 $185.00 call open interest history 11 saved observations from 2026-10-01 to 2026-10-21. Exact values and changes are listed in the table below. 2291140 2026-10-01: 128 OI2026-10-02: 128 OI2026-10-05: 128 OI2026-10-06: 128 OI2026-10-07: 128 OI2026-10-08: 128 OI2026-10-09: 128 OI2026-10-13: 128 OI2026-10-14: 128 OI2026-10-16: 228 OI2026-10-21: 229 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, 2026Viewing229+1
Oct 16, 2026228+100
Oct 14, 20261280
Oct 13, 20261280
Oct 09, 20261280
Oct 08, 20261280
Oct 07, 20261280
Oct 06, 20261280
Oct 05, 20261280
Oct 02, 20261280
Oct 01, 2026128No prior observation