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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $185.00 Call

MRK270115C00185000

Latest saved OI187Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $185.00 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. 187930 2026-10-02: 176 OI2026-10-05: 177 OI2026-10-06: 177 OI2026-10-07: 177 OI2026-10-08: 177 OI2026-10-09: 177 OI2026-10-13: 180 OI2026-10-14: 180 OI2026-10-15: 180 OI2026-10-16: 180 OI2026-10-21: 180 OI2026-10-23: 187 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, 2026Viewing187+7
Oct 21, 20261800
Oct 16, 20261800
Oct 15, 20261800
Oct 14, 20261800
Oct 13, 2026180+3
Oct 09, 20261770
Oct 08, 20261770
Oct 07, 20261770
Oct 06, 20261770
Oct 05, 2026177+1
Oct 02, 2026176No prior observation