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Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $100.00 Put

MRK270115P00100000

Latest saved OI3,251Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $100.00 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. 3,2621,6310 2026-10-02: 3,262 OI2026-10-05: 3,262 OI2026-10-06: 3,262 OI2026-10-07: 3,262 OI2026-10-08: 3,262 OI2026-10-09: 3,262 OI2026-10-13: 3,262 OI2026-10-14: 3,262 OI2026-10-15: 3,258 OI2026-10-16: 3,253 OI2026-10-21: 3,261 OI2026-10-23: 3,251 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, 2026Viewing3,251-10
Oct 21, 20263,261+8
Oct 16, 20263,253-5
Oct 15, 20263,258-4
Oct 14, 20263,2620
Oct 13, 20263,2620
Oct 09, 20263,2620
Oct 08, 20263,2620
Oct 07, 20263,2620
Oct 06, 20263,2620
Oct 05, 20263,2620
Oct 02, 20263,262No prior observation