OITracker Cboe delayed data

Contract OI history

Back to MRK

Oct 30, 2026 EXPIRATION

MRK $120.00 Put

MRK261030P00120000

Latest saved OI121Oct 23, 2026
Last change+4vs 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. 121600 2026-10-02: 1 OI2026-10-05: 101 OI2026-10-06: 104 OI2026-10-07: 104 OI2026-10-08: 104 OI2026-10-09: 104 OI2026-10-13: 104 OI2026-10-14: 104 OI2026-10-15: 111 OI2026-10-16: 111 OI2026-10-21: 117 OI2026-10-23: 121 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, 2026Viewing121+4
Oct 21, 2026117+6
Oct 16, 20261110
Oct 15, 2026111+7
Oct 14, 20261040
Oct 13, 20261040
Oct 09, 20261040
Oct 08, 20261040
Oct 07, 20261040
Oct 06, 2026104+3
Oct 05, 2026101+100
Oct 02, 20261No prior observation