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Contract OI history

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Mar 19, 2027 EXPIRATION

MRK $135.00 Put

MRK270319P00135000

Latest saved OI1,400Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $135.00 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. 1,4007000 2026-10-02: 883 OI2026-10-05: 885 OI2026-10-06: 884 OI2026-10-07: 882 OI2026-10-08: 882 OI2026-10-09: 1,379 OI2026-10-13: 1,390 OI2026-10-14: 1,390 OI2026-10-15: 1,394 OI2026-10-16: 1,395 OI2026-10-21: 1,399 OI2026-10-23: 1,400 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, 2026Viewing1,400+1
Oct 21, 20261,399+4
Oct 16, 20261,395+1
Oct 15, 20261,394+4
Oct 14, 20261,3900
Oct 13, 20261,390+11
Oct 09, 20261,379+497
Oct 08, 20268820
Oct 07, 2026882-2
Oct 06, 2026884-1
Oct 05, 2026885+2
Oct 02, 2026883No prior observation