OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $80.00 Call

MRK270115C00080000

Latest saved OI1,093Oct 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 $80.00 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. 1,0985490 2026-10-02: 1,098 OI2026-10-05: 1,094 OI2026-10-06: 1,093 OI2026-10-07: 1,093 OI2026-10-08: 1,093 OI2026-10-09: 1,093 OI2026-10-13: 1,093 OI2026-10-14: 1,093 OI2026-10-15: 1,093 OI2026-10-16: 1,093 OI2026-10-21: 1,093 OI2026-10-23: 1,093 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, 2026Viewing1,0930
Oct 21, 20261,0930
Oct 16, 20261,0930
Oct 15, 20261,0930
Oct 14, 20261,0930
Oct 13, 20261,0930
Oct 09, 20261,0930
Oct 08, 20261,0930
Oct 07, 20261,0930
Oct 06, 20261,093-1
Oct 05, 20261,094-4
Oct 02, 20261,098No prior observation