OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $120.00 Call

MRK270115C00120000

Latest saved OI5,551Oct 23, 2026
Last change-2vs 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. 5,5942,7970 2026-10-02: 5,594 OI2026-10-05: 5,590 OI2026-10-06: 5,584 OI2026-10-07: 5,583 OI2026-10-08: 5,583 OI2026-10-09: 5,571 OI2026-10-13: 5,551 OI2026-10-14: 5,551 OI2026-10-15: 5,561 OI2026-10-16: 5,558 OI2026-10-21: 5,553 OI2026-10-23: 5,551 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, 2026Viewing5,551-2
Oct 21, 20265,553-5
Oct 16, 20265,558-3
Oct 15, 20265,561+10
Oct 14, 20265,5510
Oct 13, 20265,551-20
Oct 09, 20265,571-12
Oct 08, 20265,5830
Oct 07, 20265,583-1
Oct 06, 20265,584-6
Oct 05, 20265,590-4
Oct 02, 20265,594No prior observation