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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $141.00 Put

MRK261030P00141000

Latest saved OI304Oct 23, 2026
Last change+255vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $141.00 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. 3041520 2026-10-02: 3 OI2026-10-05: 3 OI2026-10-06: 5 OI2026-10-07: 5 OI2026-10-08: 5 OI2026-10-09: 31 OI2026-10-13: 35 OI2026-10-14: 35 OI2026-10-15: 34 OI2026-10-16: 37 OI2026-10-21: 49 OI2026-10-23: 304 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, 2026Viewing304+255
Oct 21, 202649+12
Oct 16, 202637+3
Oct 15, 202634-1
Oct 14, 2026350
Oct 13, 202635+4
Oct 09, 202631+26
Oct 08, 202650
Oct 07, 202650
Oct 06, 20265+2
Oct 05, 202630
Oct 02, 20263No prior observation