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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $148.00 Call

MRK261030C00148000

Latest saved OI607Oct 23, 2026
Last change-20vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $148.00 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. 6273130 2026-10-02: 136 OI2026-10-05: 136 OI2026-10-06: 140 OI2026-10-07: 140 OI2026-10-08: 140 OI2026-10-09: 139 OI2026-10-13: 141 OI2026-10-14: 141 OI2026-10-15: 134 OI2026-10-16: 149 OI2026-10-21: 627 OI2026-10-23: 607 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, 2026Viewing607-20
Oct 21, 2026627+478
Oct 16, 2026149+15
Oct 15, 2026134-7
Oct 14, 20261410
Oct 13, 2026141+2
Oct 09, 2026139-1
Oct 08, 20261400
Oct 07, 20261400
Oct 06, 2026140+4
Oct 05, 20261360
Oct 02, 2026136No prior observation