OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $120.00 Put

MRK270115P00120000

Latest saved OI2,326Oct 23, 2026
Last change+6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $120.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,3261,1630 2026-10-02: 2,192 OI2026-10-05: 2,192 OI2026-10-06: 2,192 OI2026-10-07: 2,193 OI2026-10-08: 2,193 OI2026-10-09: 2,197 OI2026-10-13: 2,201 OI2026-10-14: 2,201 OI2026-10-15: 2,203 OI2026-10-16: 2,206 OI2026-10-21: 2,320 OI2026-10-23: 2,326 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, 2026Viewing2,326+6
Oct 21, 20262,320+114
Oct 16, 20262,206+3
Oct 15, 20262,203+2
Oct 14, 20262,2010
Oct 13, 20262,201+4
Oct 09, 20262,197+4
Oct 08, 20262,1930
Oct 07, 20262,193+1
Oct 06, 20262,1920
Oct 05, 20262,1920
Oct 02, 20262,192No prior observation