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Contract OI history

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Dec 18, 2026 EXPIRATION

MRK $80.00 Put

MRK261218P00080000

Latest saved OI839Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $80.00 put 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: 839 OI2026-10-05: 839 OI2026-10-06: 839 OI2026-10-07: 839 OI2026-10-08: 839 OI2026-10-09: 839 OI2026-10-13: 839 OI2026-10-14: 839 OI2026-10-15: 839 OI2026-10-16: 839 OI2026-10-21: 839 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, 2026Viewing8390
Oct 21, 20268390
Oct 16, 20268390
Oct 15, 20268390
Oct 14, 20268390
Oct 13, 20268390
Oct 09, 20268390
Oct 08, 20268390
Oct 07, 20268390
Oct 06, 20268390
Oct 05, 20268390
Oct 02, 2026839No prior observation