OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

MRK $142.00 Put

MRK261030P00142000

Latest saved OI138Oct 23, 2026
Last change+85vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $142.00 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. 138690 2026-10-02: 9 OI2026-10-05: 9 OI2026-10-06: 9 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 36 OI2026-10-13: 40 OI2026-10-14: 40 OI2026-10-15: 42 OI2026-10-16: 39 OI2026-10-21: 53 OI2026-10-23: 138 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, 2026Viewing138+85
Oct 21, 202653+14
Oct 16, 202639-3
Oct 15, 202642+2
Oct 14, 2026400
Oct 13, 202640+4
Oct 09, 202636+26
Oct 08, 2026100
Oct 07, 202610+1
Oct 06, 202690
Oct 05, 202690
Oct 02, 20269No prior observation