OITracker Cboe delayed data

Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $120.00 Call

MRK270617C00120000

Latest saved OI931Oct 23, 2026
Last change-1vs 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. 9324660 2026-10-02: 932 OI2026-10-05: 932 OI2026-10-06: 930 OI2026-10-07: 930 OI2026-10-08: 930 OI2026-10-09: 930 OI2026-10-13: 930 OI2026-10-14: 930 OI2026-10-15: 931 OI2026-10-16: 931 OI2026-10-21: 932 OI2026-10-23: 931 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, 2026Viewing931-1
Oct 21, 2026932+1
Oct 16, 20269310
Oct 15, 2026931+1
Oct 14, 20269300
Oct 13, 20269300
Oct 09, 20269300
Oct 08, 20269300
Oct 07, 20269300
Oct 06, 2026930-2
Oct 05, 20269320
Oct 02, 2026932No prior observation