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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $185.00 Call

MRK270617C00185000

Latest saved OI193Oct 23, 2026
Last change+6vs 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. 193960 2026-10-02: 114 OI2026-10-05: 114 OI2026-10-06: 113 OI2026-10-07: 119 OI2026-10-08: 119 OI2026-10-09: 151 OI2026-10-13: 160 OI2026-10-14: 160 OI2026-10-15: 160 OI2026-10-16: 184 OI2026-10-21: 187 OI2026-10-23: 193 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, 2026Viewing193+6
Oct 21, 2026187+3
Oct 16, 2026184+24
Oct 15, 20261600
Oct 14, 20261600
Oct 13, 2026160+9
Oct 09, 2026151+32
Oct 08, 20261190
Oct 07, 2026119+6
Oct 06, 2026113-1
Oct 05, 20261140
Oct 02, 2026114No prior observation