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Contract OI history

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Sep 17, 2027 EXPIRATION

MRK $155.00 Call

MRK270917C00155000

Latest saved OI271Oct 23, 2026
Last change0vs 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. 2711350 2026-10-02: 44 OI2026-10-05: 46 OI2026-10-06: 49 OI2026-10-07: 49 OI2026-10-08: 49 OI2026-10-09: 59 OI2026-10-13: 59 OI2026-10-14: 59 OI2026-10-15: 59 OI2026-10-16: 271 OI2026-10-21: 271 OI2026-10-23: 271 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, 2026Viewing2710
Oct 21, 20262710
Oct 16, 2026271+212
Oct 15, 2026590
Oct 14, 2026590
Oct 13, 2026590
Oct 09, 202659+10
Oct 08, 2026490
Oct 07, 2026490
Oct 06, 202649+3
Oct 05, 202646+2
Oct 02, 202644No prior observation