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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $165.00 Call

MRK270115C00165000

Latest saved OI5,858Oct 23, 2026
Last change+4,006vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $165.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5,8582,9290 2026-10-02: 1,821 OI2026-10-05: 1,815 OI2026-10-06: 1,714 OI2026-10-07: 1,713 OI2026-10-08: 1,713 OI2026-10-09: 1,719 OI2026-10-13: 1,773 OI2026-10-14: 1,773 OI2026-10-15: 1,778 OI2026-10-16: 1,848 OI2026-10-21: 1,852 OI2026-10-23: 5,858 OI Oct 02, 2026Oct 23, 2026

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

MRK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,858+4,006
Oct 21, 20261,852+4
Oct 16, 20261,848+70
Oct 15, 20261,778+5
Oct 14, 20261,7730
Oct 13, 20261,773+54
Oct 09, 20261,719+6
Oct 08, 20261,7130
Oct 07, 20261,713-1
Oct 06, 20261,714-101
Oct 05, 20261,815-6
Oct 02, 20261,821No prior observation