OITracker Cboe delayed data

Contract OI history

Back to MRK

Mar 19, 2027 EXPIRATION

MRK $120.00 Call

MRK270319C00120000

Latest saved OI1,865Oct 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 $120.00 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. 1,8839410 2026-10-02: 1,877 OI2026-10-05: 1,883 OI2026-10-06: 1,881 OI2026-10-07: 1,881 OI2026-10-08: 1,881 OI2026-10-09: 1,881 OI2026-10-13: 1,881 OI2026-10-14: 1,881 OI2026-10-15: 1,867 OI2026-10-16: 1,866 OI2026-10-21: 1,865 OI2026-10-23: 1,865 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, 2026Viewing1,8650
Oct 21, 20261,865-1
Oct 16, 20261,866-1
Oct 15, 20261,867-14
Oct 14, 20261,8810
Oct 13, 20261,8810
Oct 09, 20261,8810
Oct 08, 20261,8810
Oct 07, 20261,8810
Oct 06, 20261,881-2
Oct 05, 20261,883+6
Oct 02, 20261,877No prior observation