OITracker Cboe delayed data

Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $170.00 Call

MRK270617C00170000

Latest saved OI2,406Oct 23, 2026
Last change-85vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $170.00 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. 2,5201,2600 2026-10-02: 1,841 OI2026-10-05: 1,839 OI2026-10-06: 1,825 OI2026-10-07: 1,825 OI2026-10-08: 1,825 OI2026-10-09: 1,826 OI2026-10-13: 2,519 OI2026-10-14: 2,519 OI2026-10-15: 2,520 OI2026-10-16: 2,519 OI2026-10-21: 2,491 OI2026-10-23: 2,406 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, 2026Viewing2,406-85
Oct 21, 20262,491-28
Oct 16, 20262,519-1
Oct 15, 20262,520+1
Oct 14, 20262,5190
Oct 13, 20262,519+693
Oct 09, 20261,826+1
Oct 08, 20261,8250
Oct 07, 20261,8250
Oct 06, 20261,825-14
Oct 05, 20261,839-2
Oct 02, 20261,841No prior observation