OITracker Cboe delayed data

Contract OI history

Back to MDLN

Nov 20, 2026 EXPIRATION

MDLN $37.50 Call

MDLN261120C00037500

Latest saved OI2,917Oct 23, 2026
Last change-1,950vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDLN $37.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4,8672,4330 2026-10-09: 162 OI2026-10-13: 162 OI2026-10-14: 163 OI2026-10-15: 163 OI2026-10-16: 165 OI2026-10-21: 4,867 OI2026-10-23: 2,917 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MDLN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2,917-1,950
Oct 21, 20264,867+4,702
Oct 16, 2026165+2
Oct 15, 20261630
Oct 14, 2026163+1
Oct 13, 20261620
Oct 09, 2026162No prior observation