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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $149.00 Put

MRK261030P00149000

Latest saved OI490Oct 23, 2026
Last change+445vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $149.00 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. 4902450 2026-10-02: 5 OI2026-10-05: 5 OI2026-10-06: 5 OI2026-10-07: 5 OI2026-10-08: 5 OI2026-10-09: 5 OI2026-10-13: 43 OI2026-10-14: 43 OI2026-10-15: 43 OI2026-10-16: 43 OI2026-10-21: 45 OI2026-10-23: 490 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, 2026Viewing490+445
Oct 21, 202645+2
Oct 16, 2026430
Oct 15, 2026430
Oct 14, 2026430
Oct 13, 202643+38
Oct 09, 202650
Oct 08, 202650
Oct 07, 202650
Oct 06, 202650
Oct 05, 202650
Oct 02, 20265No prior observation