OITracker Cboe delayed data

Contract OI history

Back to MRK

Nov 20, 2026 EXPIRATION

MRK $130.00 Put

MRK261120P00130000

Latest saved OI3,130Oct 23, 2026
Last change-25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $130.00 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. 3,1551,5770 2026-10-02: 2,300 OI2026-10-05: 2,351 OI2026-10-06: 2,479 OI2026-10-07: 2,536 OI2026-10-08: 2,536 OI2026-10-09: 2,570 OI2026-10-13: 2,615 OI2026-10-14: 2,615 OI2026-10-15: 2,830 OI2026-10-16: 2,751 OI2026-10-21: 3,155 OI2026-10-23: 3,130 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, 2026Viewing3,130-25
Oct 21, 20263,155+404
Oct 16, 20262,751-79
Oct 15, 20262,830+215
Oct 14, 20262,6150
Oct 13, 20262,615+45
Oct 09, 20262,570+34
Oct 08, 20262,5360
Oct 07, 20262,536+57
Oct 06, 20262,479+128
Oct 05, 20262,351+51
Oct 02, 20262,300No prior observation