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Contract OI history

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Nov 06, 2026 EXPIRATION

MRK $134.00 Put

MRK261106P00134000

Latest saved OI266Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $134.00 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. 2681340 2026-10-02: 25 OI2026-10-05: 25 OI2026-10-06: 26 OI2026-10-07: 27 OI2026-10-08: 27 OI2026-10-09: 31 OI2026-10-13: 57 OI2026-10-14: 57 OI2026-10-15: 56 OI2026-10-16: 53 OI2026-10-21: 268 OI2026-10-23: 266 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, 2026Viewing266-2
Oct 21, 2026268+215
Oct 16, 202653-3
Oct 15, 202656-1
Oct 14, 2026570
Oct 13, 202657+26
Oct 09, 202631+4
Oct 08, 2026270
Oct 07, 202627+1
Oct 06, 202626+1
Oct 05, 2026250
Oct 02, 202625No prior observation