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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $140.00 Put

MRK261030P00140000

Latest saved OI845Oct 23, 2026
Last change+209vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $140.00 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. 8454220 2026-10-02: 43 OI2026-10-05: 47 OI2026-10-06: 408 OI2026-10-07: 426 OI2026-10-08: 426 OI2026-10-09: 436 OI2026-10-13: 441 OI2026-10-14: 441 OI2026-10-15: 443 OI2026-10-16: 444 OI2026-10-21: 636 OI2026-10-23: 845 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, 2026Viewing845+209
Oct 21, 2026636+192
Oct 16, 2026444+1
Oct 15, 2026443+2
Oct 14, 20264410
Oct 13, 2026441+5
Oct 09, 2026436+10
Oct 08, 20264260
Oct 07, 2026426+18
Oct 06, 2026408+361
Oct 05, 202647+4
Oct 02, 202643No prior observation