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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $120.00 Put

MRK270319P00120000

Latest saved OI1,924Oct 23, 2026
Last change+23vs 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. 1,9249620 2026-10-02: 1,662 OI2026-10-05: 1,704 OI2026-10-06: 1,758 OI2026-10-07: 1,787 OI2026-10-08: 1,787 OI2026-10-09: 1,884 OI2026-10-13: 1,892 OI2026-10-14: 1,892 OI2026-10-15: 1,901 OI2026-10-16: 1,901 OI2026-10-21: 1,901 OI2026-10-23: 1,924 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, 2026Viewing1,924+23
Oct 21, 20261,9010
Oct 16, 20261,9010
Oct 15, 20261,901+9
Oct 14, 20261,8920
Oct 13, 20261,892+8
Oct 09, 20261,884+97
Oct 08, 20261,7870
Oct 07, 20261,787+29
Oct 06, 20261,758+54
Oct 05, 20261,704+42
Oct 02, 20261,662No prior observation