OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MRK $110.00 Put

MRK270115P00110000

Latest saved OI4,294Oct 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 $110.00 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. 4,3062,1530 2026-10-02: 4,306 OI2026-10-05: 4,303 OI2026-10-06: 4,269 OI2026-10-07: 4,269 OI2026-10-08: 4,269 OI2026-10-09: 4,269 OI2026-10-13: 4,274 OI2026-10-14: 4,274 OI2026-10-15: 4,281 OI2026-10-16: 4,281 OI2026-10-21: 4,293 OI2026-10-23: 4,294 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, 2026Viewing4,294+1
Oct 21, 20264,293+12
Oct 16, 20264,2810
Oct 15, 20264,281+7
Oct 14, 20264,2740
Oct 13, 20264,274+5
Oct 09, 20264,2690
Oct 08, 20264,2690
Oct 07, 20264,2690
Oct 06, 20264,269-34
Oct 05, 20264,303-3
Oct 02, 20264,306No prior observation