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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $145.00 Put

MRK261030P00145000

Latest saved OI518Oct 23, 2026
Last change+66vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $145.00 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. 5182590 2026-10-02: 297 OI2026-10-05: 314 OI2026-10-06: 322 OI2026-10-07: 322 OI2026-10-08: 322 OI2026-10-09: 323 OI2026-10-13: 318 OI2026-10-14: 318 OI2026-10-15: 324 OI2026-10-16: 324 OI2026-10-21: 452 OI2026-10-23: 518 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, 2026Viewing518+66
Oct 21, 2026452+128
Oct 16, 20263240
Oct 15, 2026324+6
Oct 14, 20263180
Oct 13, 2026318-5
Oct 09, 2026323+1
Oct 08, 20263220
Oct 07, 20263220
Oct 06, 2026322+8
Oct 05, 2026314+17
Oct 02, 2026297No prior observation