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Contract OI history

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Nov 20, 2026 EXPIRATION

MRK $165.00 Call

MRK261120C00165000

Latest saved OI4,456Oct 23, 2026
Last change+414vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $165.00 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. 4,4562,2280 2026-10-02: 2,374 OI2026-10-05: 2,374 OI2026-10-06: 2,486 OI2026-10-07: 2,516 OI2026-10-08: 2,516 OI2026-10-09: 2,590 OI2026-10-13: 2,581 OI2026-10-14: 2,581 OI2026-10-15: 2,559 OI2026-10-16: 3,826 OI2026-10-21: 4,042 OI2026-10-23: 4,456 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, 2026Viewing4,456+414
Oct 21, 20264,042+216
Oct 16, 20263,826+1,267
Oct 15, 20262,559-22
Oct 14, 20262,5810
Oct 13, 20262,581-9
Oct 09, 20262,590+74
Oct 08, 20262,5160
Oct 07, 20262,516+30
Oct 06, 20262,486+112
Oct 05, 20262,3740
Oct 02, 20262,374No prior observation