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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $180.00 Call

MRK270319C00180000

Latest saved OI1,253Oct 23, 2026
Last change+108vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $180.00 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. 1,2756370 2026-10-02: 1,274 OI2026-10-05: 1,275 OI2026-10-06: 1,132 OI2026-10-07: 1,132 OI2026-10-08: 1,132 OI2026-10-09: 1,132 OI2026-10-13: 1,135 OI2026-10-14: 1,135 OI2026-10-15: 1,135 OI2026-10-16: 1,143 OI2026-10-21: 1,145 OI2026-10-23: 1,253 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, 2026Viewing1,253+108
Oct 21, 20261,145+2
Oct 16, 20261,143+8
Oct 15, 20261,1350
Oct 14, 20261,1350
Oct 13, 20261,135+3
Oct 09, 20261,1320
Oct 08, 20261,1320
Oct 07, 20261,1320
Oct 06, 20261,132-143
Oct 05, 20261,275+1
Oct 02, 20261,274No prior observation