OITracker Cboe delayed data

Contract OI history

Back to MRK

Mar 19, 2027 EXPIRATION

MRK $145.00 Call

MRK270319C00145000

Latest saved OI1,500Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MRK $145.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,5037510 2026-10-02: 871 OI2026-10-05: 872 OI2026-10-06: 992 OI2026-10-07: 994 OI2026-10-08: 994 OI2026-10-09: 1,497 OI2026-10-13: 1,500 OI2026-10-14: 1,500 OI2026-10-15: 1,503 OI2026-10-16: 1,497 OI2026-10-21: 1,500 OI2026-10-23: 1,500 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, 2026Viewing1,5000
Oct 21, 20261,500+3
Oct 16, 20261,497-6
Oct 15, 20261,503+3
Oct 14, 20261,5000
Oct 13, 20261,500+3
Oct 09, 20261,497+503
Oct 08, 20269940
Oct 07, 2026994+2
Oct 06, 2026992+120
Oct 05, 2026872+1
Oct 02, 2026871No prior observation