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Contract OI history

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Dec 18, 2026 EXPIRATION

MCK $890.00 Put

MCK261218P00890000

Latest saved OI114Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MCK $890.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 114570 2026-10-02: 100 OI2026-10-05: 100 OI2026-10-06: 101 OI2026-10-07: 101 OI2026-10-08: 101 OI2026-10-09: 101 OI2026-10-13: 103 OI2026-10-14: 107 OI2026-10-15: 110 OI2026-10-16: 110 OI2026-10-21: 113 OI2026-10-23: 114 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MCK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026114+1
Oct 21, 2026Viewing113+3
Oct 16, 20261100
Oct 15, 2026110+3
Oct 14, 2026107+4
Oct 13, 2026103+2
Oct 09, 20261010
Oct 08, 20261010
Oct 07, 20261010
Oct 06, 2026101+1
Oct 05, 20261000
Oct 02, 2026100No prior observation