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Contract OI history

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Nov 20, 2026 EXPIRATION

MRK $145.00 Put

MRK261120P00145000

Latest saved OI4,628Oct 23, 2026
Last change+451vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $145.00 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. 4,6282,3140 2026-10-02: 4,142 OI2026-10-05: 4,141 OI2026-10-06: 4,129 OI2026-10-07: 4,129 OI2026-10-08: 4,129 OI2026-10-09: 4,143 OI2026-10-13: 4,137 OI2026-10-14: 4,137 OI2026-10-15: 4,170 OI2026-10-16: 4,165 OI2026-10-21: 4,177 OI2026-10-23: 4,628 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, 2026Viewing4,628+451
Oct 21, 20264,177+12
Oct 16, 20264,165-5
Oct 15, 20264,170+33
Oct 14, 20264,1370
Oct 13, 20264,137-6
Oct 09, 20264,143+14
Oct 08, 20264,1290
Oct 07, 20264,1290
Oct 06, 20264,129-12
Oct 05, 20264,141-1
Oct 02, 20264,142No prior observation