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Contract OI history

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Jun 17, 2027 EXPIRATION

MRK $120.00 Put

MRK270617P00120000

Latest saved OI1,366Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $120.00 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. 1,3666830 2026-10-02: 1,344 OI2026-10-05: 1,344 OI2026-10-06: 1,353 OI2026-10-07: 1,359 OI2026-10-08: 1,359 OI2026-10-09: 1,359 OI2026-10-13: 1,359 OI2026-10-14: 1,359 OI2026-10-15: 1,358 OI2026-10-16: 1,358 OI2026-10-21: 1,363 OI2026-10-23: 1,366 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, 2026Viewing1,366+3
Oct 21, 20261,363+5
Oct 16, 20261,3580
Oct 15, 20261,358-1
Oct 14, 20261,3590
Oct 13, 20261,3590
Oct 09, 20261,3590
Oct 08, 20261,3590
Oct 07, 20261,359+6
Oct 06, 20261,353+9
Oct 05, 20261,3440
Oct 02, 20261,344No prior observation