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Contract OI history

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Jan 21, 2028 EXPIRATION

MRK $125.00 Put

MRK280121P00125000

Latest saved OI1,181Oct 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 $125.00 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. 1,1815900 2026-10-02: 1,178 OI2026-10-05: 1,178 OI2026-10-06: 1,181 OI2026-10-07: 1,181 OI2026-10-08: 1,181 OI2026-10-09: 1,181 OI2026-10-13: 1,181 OI2026-10-14: 1,181 OI2026-10-15: 1,181 OI2026-10-16: 1,181 OI2026-10-21: 1,181 OI2026-10-23: 1,181 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, 2026Viewing1,1810
Oct 21, 20261,1810
Oct 16, 20261,1810
Oct 15, 20261,1810
Oct 14, 20261,1810
Oct 13, 20261,1810
Oct 09, 20261,1810
Oct 08, 20261,1810
Oct 07, 20261,1810
Oct 06, 20261,181+3
Oct 05, 20261,1780
Oct 02, 20261,178No prior observation