OITracker Cboe delayed data

Contract OI history

Back to MRK

Oct 30, 2026 EXPIRATION

MRK $146.00 Put

MRK261030P00146000

Latest saved OI312Oct 23, 2026
Last change+184vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $146.00 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. 3121560 2026-10-02: 50 OI2026-10-05: 50 OI2026-10-06: 50 OI2026-10-07: 50 OI2026-10-08: 50 OI2026-10-09: 51 OI2026-10-13: 51 OI2026-10-14: 51 OI2026-10-15: 74 OI2026-10-16: 74 OI2026-10-21: 128 OI2026-10-23: 312 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, 2026Viewing312+184
Oct 21, 2026128+54
Oct 16, 2026740
Oct 15, 202674+23
Oct 14, 2026510
Oct 13, 2026510
Oct 09, 202651+1
Oct 08, 2026500
Oct 07, 2026500
Oct 06, 2026500
Oct 05, 2026500
Oct 02, 202650No prior observation