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Contract OI history

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Dec 18, 2026 EXPIRATION

MRK $135.00 Call

MRK261218C00135000

Latest saved OI1,623Oct 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 $135.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,6268130 2026-10-02: 1,611 OI2026-10-05: 1,612 OI2026-10-06: 1,612 OI2026-10-07: 1,615 OI2026-10-08: 1,615 OI2026-10-09: 1,620 OI2026-10-13: 1,618 OI2026-10-14: 1,618 OI2026-10-15: 1,618 OI2026-10-16: 1,617 OI2026-10-21: 1,626 OI2026-10-23: 1,623 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, 2026Viewing1,623-3
Oct 21, 20261,626+9
Oct 16, 20261,617-1
Oct 15, 20261,6180
Oct 14, 20261,6180
Oct 13, 20261,618-2
Oct 09, 20261,620+5
Oct 08, 20261,6150
Oct 07, 20261,615+3
Oct 06, 20261,6120
Oct 05, 20261,612+1
Oct 02, 20261,611No prior observation