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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $135.00 Put

MRK261030P00135000

Latest saved OI2,027Oct 23, 2026
Last change+1,787vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $135.00 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. 2,0271,0130 2026-10-02: 126 OI2026-10-05: 133 OI2026-10-06: 183 OI2026-10-07: 183 OI2026-10-08: 183 OI2026-10-09: 242 OI2026-10-13: 249 OI2026-10-14: 249 OI2026-10-15: 194 OI2026-10-16: 188 OI2026-10-21: 240 OI2026-10-23: 2,027 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, 2026Viewing2,027+1,787
Oct 21, 2026240+52
Oct 16, 2026188-6
Oct 15, 2026194-55
Oct 14, 20262490
Oct 13, 2026249+7
Oct 09, 2026242+59
Oct 08, 20261830
Oct 07, 20261830
Oct 06, 2026183+50
Oct 05, 2026133+7
Oct 02, 2026126No prior observation