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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $133.00 Put

MRK261030P00133000

Latest saved OI369Oct 23, 2026
Last change+51vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $133.00 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. 3691840 2026-10-02: 5 OI2026-10-05: 201 OI2026-10-06: 312 OI2026-10-07: 312 OI2026-10-08: 312 OI2026-10-09: 323 OI2026-10-13: 326 OI2026-10-14: 326 OI2026-10-15: 325 OI2026-10-16: 316 OI2026-10-21: 318 OI2026-10-23: 369 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, 2026Viewing369+51
Oct 21, 2026318+2
Oct 16, 2026316-9
Oct 15, 2026325-1
Oct 14, 20263260
Oct 13, 2026326+3
Oct 09, 2026323+11
Oct 08, 20263120
Oct 07, 20263120
Oct 06, 2026312+111
Oct 05, 2026201+196
Oct 02, 20265No prior observation