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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $175.00 Call

MRK270617C00175000

Latest saved OI339Oct 23, 2026
Last change+23vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $175.00 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. 3391690 2026-10-02: 276 OI2026-10-05: 276 OI2026-10-06: 275 OI2026-10-07: 275 OI2026-10-08: 275 OI2026-10-09: 275 OI2026-10-13: 311 OI2026-10-14: 311 OI2026-10-15: 311 OI2026-10-16: 311 OI2026-10-21: 316 OI2026-10-23: 339 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, 2026Viewing339+23
Oct 21, 2026316+5
Oct 16, 20263110
Oct 15, 20263110
Oct 14, 20263110
Oct 13, 2026311+36
Oct 09, 20262750
Oct 08, 20262750
Oct 07, 20262750
Oct 06, 2026275-1
Oct 05, 20262760
Oct 02, 2026276No prior observation