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Contract OI history

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Oct 23, 2026 EXPIRATION

MRK $141.00 Put

MRK261023P00141000

Latest saved OI659Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $141.00 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. 6653320 2026-10-02: 103 OI2026-10-05: 103 OI2026-10-06: 99 OI2026-10-07: 93 OI2026-10-08: 93 OI2026-10-09: 187 OI2026-10-13: 202 OI2026-10-14: 202 OI2026-10-15: 197 OI2026-10-16: 206 OI2026-10-21: 665 OI2026-10-23: 659 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, 2026Viewing659-6
Oct 21, 2026665+459
Oct 16, 2026206+9
Oct 15, 2026197-5
Oct 14, 20262020
Oct 13, 2026202+15
Oct 09, 2026187+94
Oct 08, 2026930
Oct 07, 202693-6
Oct 06, 202699-4
Oct 05, 20261030
Oct 02, 2026103No prior observation