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Contract OI history

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Dec 18, 2026 EXPIRATION

BMO $180.00 Put

BMO261218P00180000

Latest saved OI1,023Oct 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 $180.00 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. 1,0255120 2026-10-01: 1,025 OI2026-10-02: 1,025 OI2026-10-05: 1,025 OI2026-10-06: 1,025 OI2026-10-07: 1,025 OI2026-10-08: 1,025 OI2026-10-09: 1,025 OI2026-10-13: 1,025 OI2026-10-14: 1,025 OI2026-10-16: 1,023 OI2026-10-21: 1,023 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, 2026Viewing1,0230
Oct 16, 20261,023-2
Oct 14, 20261,0250
Oct 13, 20261,0250
Oct 09, 20261,0250
Oct 08, 20261,0250
Oct 07, 20261,0250
Oct 06, 20261,0250
Oct 05, 20261,0250
Oct 02, 20261,0250
Oct 01, 20261,025No prior observation