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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $175.00 Call

MRK270319C00175000

Latest saved OI839Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $175.00 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. 8394190 2026-10-02: 824 OI2026-10-05: 824 OI2026-10-06: 824 OI2026-10-07: 824 OI2026-10-08: 824 OI2026-10-09: 823 OI2026-10-13: 826 OI2026-10-14: 826 OI2026-10-15: 826 OI2026-10-16: 829 OI2026-10-21: 837 OI2026-10-23: 839 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, 2026Viewing839+2
Oct 21, 2026837+8
Oct 16, 2026829+3
Oct 15, 20268260
Oct 14, 20268260
Oct 13, 2026826+3
Oct 09, 2026823-1
Oct 08, 20268240
Oct 07, 20268240
Oct 06, 20268240
Oct 05, 20268240
Oct 02, 2026824No prior observation