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Contract OI history

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Jan 21, 2028 EXPIRATION

MRK $130.00 Put

MRK280121P00130000

Latest saved OI635Oct 23, 2026
Last change+6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $130.00 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. 6353170 2026-10-02: 389 OI2026-10-05: 389 OI2026-10-06: 389 OI2026-10-07: 385 OI2026-10-08: 385 OI2026-10-09: 384 OI2026-10-13: 384 OI2026-10-14: 384 OI2026-10-15: 397 OI2026-10-16: 397 OI2026-10-21: 629 OI2026-10-23: 635 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, 2026Viewing635+6
Oct 21, 2026629+232
Oct 16, 20263970
Oct 15, 2026397+13
Oct 14, 20263840
Oct 13, 20263840
Oct 09, 2026384-1
Oct 08, 20263850
Oct 07, 2026385-4
Oct 06, 20263890
Oct 05, 20263890
Oct 02, 2026389No prior observation