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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $155.00 Call

MRK270617C00155000

Latest saved OI802Oct 23, 2026
Last change+8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $155.00 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. 8304150 2026-10-02: 830 OI2026-10-05: 829 OI2026-10-06: 782 OI2026-10-07: 783 OI2026-10-08: 783 OI2026-10-09: 782 OI2026-10-13: 777 OI2026-10-14: 777 OI2026-10-15: 777 OI2026-10-16: 777 OI2026-10-21: 794 OI2026-10-23: 802 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, 2026Viewing802+8
Oct 21, 2026794+17
Oct 16, 20267770
Oct 15, 20267770
Oct 14, 20267770
Oct 13, 2026777-5
Oct 09, 2026782-1
Oct 08, 20267830
Oct 07, 2026783+1
Oct 06, 2026782-47
Oct 05, 2026829-1
Oct 02, 2026830No prior observation