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Contract OI history

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Dec 18, 2026 EXPIRATION

MRK $145.00 Call

MRK261218C00145000

Latest saved OI999Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $145.00 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. 9994990 2026-10-02: 895 OI2026-10-05: 897 OI2026-10-06: 943 OI2026-10-07: 954 OI2026-10-08: 954 OI2026-10-09: 965 OI2026-10-13: 991 OI2026-10-14: 991 OI2026-10-15: 998 OI2026-10-16: 980 OI2026-10-21: 990 OI2026-10-23: 999 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, 2026Viewing999+9
Oct 21, 2026990+10
Oct 16, 2026980-18
Oct 15, 2026998+7
Oct 14, 20269910
Oct 13, 2026991+26
Oct 09, 2026965+11
Oct 08, 20269540
Oct 07, 2026954+11
Oct 06, 2026943+46
Oct 05, 2026897+2
Oct 02, 2026895No prior observation