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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $135.00 Call

MRK270115C00135000

Latest saved OI3,741Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $135.00 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. 3,7721,8860 2026-10-02: 3,743 OI2026-10-05: 3,743 OI2026-10-06: 3,772 OI2026-10-07: 3,755 OI2026-10-08: 3,755 OI2026-10-09: 3,757 OI2026-10-13: 3,757 OI2026-10-14: 3,757 OI2026-10-15: 3,762 OI2026-10-16: 3,762 OI2026-10-21: 3,742 OI2026-10-23: 3,741 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, 2026Viewing3,741-1
Oct 21, 20263,742-20
Oct 16, 20263,7620
Oct 15, 20263,762+5
Oct 14, 20263,7570
Oct 13, 20263,7570
Oct 09, 20263,757+2
Oct 08, 20263,7550
Oct 07, 20263,755-17
Oct 06, 20263,772+29
Oct 05, 20263,7430
Oct 02, 20263,743No prior observation