OITracker Cboe delayed data

Contract OI history

Back to MRK

Oct 23, 2026 EXPIRATION

MRK $157.50 Call

MRK261023C00157500

Latest saved OI420Oct 23, 2026
Last change+182vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $157.50 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. 4202100 2026-10-02: 143 OI2026-10-05: 140 OI2026-10-06: 136 OI2026-10-07: 137 OI2026-10-08: 137 OI2026-10-09: 143 OI2026-10-13: 143 OI2026-10-14: 143 OI2026-10-15: 144 OI2026-10-16: 151 OI2026-10-21: 238 OI2026-10-23: 420 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, 2026Viewing420+182
Oct 21, 2026238+87
Oct 16, 2026151+7
Oct 15, 2026144+1
Oct 14, 20261430
Oct 13, 20261430
Oct 09, 2026143+6
Oct 08, 20261370
Oct 07, 2026137+1
Oct 06, 2026136-4
Oct 05, 2026140-3
Oct 02, 2026143No prior observation