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Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $195.00 Call

MRK261030C00195000

Latest saved OI109Oct 23, 2026
Last change+36vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $195.00 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. 109540 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 1 OI2026-10-08: 1 OI2026-10-09: 1 OI2026-10-13: 55 OI2026-10-14: 55 OI2026-10-15: 64 OI2026-10-16: 73 OI2026-10-21: 73 OI2026-10-23: 109 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, 2026Viewing109+36
Oct 21, 2026730
Oct 16, 202673+9
Oct 15, 202664+9
Oct 14, 2026550
Oct 13, 202655+54
Oct 09, 202610
Oct 08, 202610
Oct 07, 202610
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation