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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $155.00 Call

MRK270319C00155000

Latest saved OI2,337Oct 23, 2026
Last change+35vs 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. 2,3371,1680 2026-10-02: 2,219 OI2026-10-05: 2,220 OI2026-10-06: 2,225 OI2026-10-07: 2,225 OI2026-10-08: 2,225 OI2026-10-09: 2,228 OI2026-10-13: 2,249 OI2026-10-14: 2,249 OI2026-10-15: 2,249 OI2026-10-16: 2,257 OI2026-10-21: 2,302 OI2026-10-23: 2,337 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, 2026Viewing2,337+35
Oct 21, 20262,302+45
Oct 16, 20262,257+8
Oct 15, 20262,2490
Oct 14, 20262,2490
Oct 13, 20262,249+21
Oct 09, 20262,228+3
Oct 08, 20262,2250
Oct 07, 20262,2250
Oct 06, 20262,225+5
Oct 05, 20262,220+1
Oct 02, 20262,219No prior observation