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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $144.00 Put

MRK261030P00144000

Latest saved OI967Oct 23, 2026
Last change+660vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $144.00 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. 9674830 2026-10-02: 49 OI2026-10-05: 54 OI2026-10-06: 58 OI2026-10-07: 58 OI2026-10-08: 58 OI2026-10-09: 58 OI2026-10-13: 57 OI2026-10-14: 57 OI2026-10-15: 61 OI2026-10-16: 61 OI2026-10-21: 307 OI2026-10-23: 967 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, 2026Viewing967+660
Oct 21, 2026307+246
Oct 16, 2026610
Oct 15, 202661+4
Oct 14, 2026570
Oct 13, 202657-1
Oct 09, 2026580
Oct 08, 2026580
Oct 07, 2026580
Oct 06, 202658+4
Oct 05, 202654+5
Oct 02, 202649No prior observation