OITracker Cboe delayed data

Contract OI history

Back to MRK

Oct 23, 2026 EXPIRATION

MRK $150.00 Put

MRK261023P00150000

Latest saved OI331Oct 23, 2026
Last change+296vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $150.00 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. 3311650 2026-10-02: 5 OI2026-10-05: 5 OI2026-10-06: 6 OI2026-10-07: 6 OI2026-10-08: 6 OI2026-10-09: 5 OI2026-10-13: 6 OI2026-10-14: 6 OI2026-10-15: 27 OI2026-10-16: 26 OI2026-10-21: 35 OI2026-10-23: 331 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, 2026Viewing331+296
Oct 21, 202635+9
Oct 16, 202626-1
Oct 15, 202627+21
Oct 14, 202660
Oct 13, 20266+1
Oct 09, 20265-1
Oct 08, 202660
Oct 07, 202660
Oct 06, 20266+1
Oct 05, 202650
Oct 02, 20265No prior observation