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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $145.00 Put

MRK270115P00145000

Latest saved OI840Oct 23, 2026
Last change+38vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $145.00 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. 8404200 2026-10-02: 568 OI2026-10-05: 569 OI2026-10-06: 565 OI2026-10-07: 566 OI2026-10-08: 566 OI2026-10-09: 690 OI2026-10-13: 697 OI2026-10-14: 697 OI2026-10-15: 782 OI2026-10-16: 788 OI2026-10-21: 802 OI2026-10-23: 840 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, 2026Viewing840+38
Oct 21, 2026802+14
Oct 16, 2026788+6
Oct 15, 2026782+85
Oct 14, 20266970
Oct 13, 2026697+7
Oct 09, 2026690+124
Oct 08, 20265660
Oct 07, 2026566+1
Oct 06, 2026565-4
Oct 05, 2026569+1
Oct 02, 2026568No prior observation