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Contract OI history

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Dec 18, 2026 EXPIRATION

MRK $140.00 Call

MRK261218C00140000

Latest saved OI3,512Oct 23, 2026
Last change+20vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $140.00 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. 3,5121,7560 2026-10-02: 3,384 OI2026-10-05: 3,382 OI2026-10-06: 3,398 OI2026-10-07: 3,414 OI2026-10-08: 3,414 OI2026-10-09: 3,461 OI2026-10-13: 3,472 OI2026-10-14: 3,472 OI2026-10-15: 3,503 OI2026-10-16: 3,494 OI2026-10-21: 3,492 OI2026-10-23: 3,512 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, 2026Viewing3,512+20
Oct 21, 20263,492-2
Oct 16, 20263,494-9
Oct 15, 20263,503+31
Oct 14, 20263,4720
Oct 13, 20263,472+11
Oct 09, 20263,461+47
Oct 08, 20263,4140
Oct 07, 20263,414+16
Oct 06, 20263,398+16
Oct 05, 20263,382-2
Oct 02, 20263,384No prior observation