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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $195.00 Call

MRK270319C00195000

Latest saved OI334Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $195.00 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. 3451720 2026-10-02: 332 OI2026-10-05: 345 OI2026-10-06: 345 OI2026-10-07: 335 OI2026-10-08: 335 OI2026-10-09: 335 OI2026-10-13: 335 OI2026-10-14: 335 OI2026-10-15: 335 OI2026-10-16: 336 OI2026-10-21: 336 OI2026-10-23: 334 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, 2026Viewing334-2
Oct 21, 20263360
Oct 16, 2026336+1
Oct 15, 20263350
Oct 14, 20263350
Oct 13, 20263350
Oct 09, 20263350
Oct 08, 20263350
Oct 07, 2026335-10
Oct 06, 20263450
Oct 05, 2026345+13
Oct 02, 2026332No prior observation