OITracker Cboe delayed data

Contract OI history

Back to MDB

Jan 19, 2029 EXPIRATION

MDB $300.00 Put

MDB290119P00300000

Latest saved OI41Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $300.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 49240 2026-10-09: 49 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-15: 39 OI2026-10-16: 39 OI2026-10-21: 39 OI2026-10-23: 41 OI Oct 09, 2026Oct 23, 2026

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

MDB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202641+2
Oct 21, 2026Viewing390
Oct 16, 2026390
Oct 15, 202639+1
Oct 14, 2026380
Oct 13, 202638-11
Oct 09, 202649No prior observation