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Contract OI history

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Nov 20, 2026 EXPIRATION

MRK $146.00 Put

MRK261120P00146000

Latest saved OI2,836Oct 23, 2026
Last change+2,828vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $146.00 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 2,8361,4180 2026-10-21: 8 OI2026-10-23: 2,836 OI Oct 21, 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, 2026Viewing2,836+2,828
Oct 21, 20268No prior observation