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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $155.00 Put

MRK270617P00155000

Latest saved OI333Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $155.00 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. 3331660 2026-10-02: 225 OI2026-10-05: 225 OI2026-10-06: 211 OI2026-10-07: 211 OI2026-10-08: 211 OI2026-10-09: 264 OI2026-10-13: 264 OI2026-10-14: 264 OI2026-10-15: 264 OI2026-10-16: 264 OI2026-10-21: 333 OI2026-10-23: 333 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, 2026Viewing3330
Oct 21, 2026333+69
Oct 16, 20262640
Oct 15, 20262640
Oct 14, 20262640
Oct 13, 20262640
Oct 09, 2026264+53
Oct 08, 20262110
Oct 07, 20262110
Oct 06, 2026211-14
Oct 05, 20262250
Oct 02, 2026225No prior observation