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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $185.00 Call

MRK270319C00185000

Latest saved OI1,675Oct 23, 2026
Last change+4vs 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. 1,6758370 2026-10-02: 1,623 OI2026-10-05: 1,623 OI2026-10-06: 1,669 OI2026-10-07: 1,669 OI2026-10-08: 1,669 OI2026-10-09: 1,669 OI2026-10-13: 1,669 OI2026-10-14: 1,669 OI2026-10-15: 1,669 OI2026-10-16: 1,669 OI2026-10-21: 1,671 OI2026-10-23: 1,675 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, 2026Viewing1,675+4
Oct 21, 20261,671+2
Oct 16, 20261,6690
Oct 15, 20261,6690
Oct 14, 20261,6690
Oct 13, 20261,6690
Oct 09, 20261,6690
Oct 08, 20261,6690
Oct 07, 20261,6690
Oct 06, 20261,669+46
Oct 05, 20261,6230
Oct 02, 20261,623No prior observation