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Contract OI history

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Oct 23, 2026 EXPIRATION

MDB $420.00 Put

MDB261023P00420000

Latest saved OI0Oct 23, 2026
Last change-20vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $420.00 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. 40200 2026-10-09: 40 OI2026-10-13: 40 OI2026-10-14: 40 OI2026-10-15: 40 OI2026-10-16: 40 OI2026-10-21: 20 OI2026-10-23: 0 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, 2026Viewing0-20
Oct 21, 202620-20
Oct 16, 2026400
Oct 15, 2026400
Oct 14, 2026400
Oct 13, 2026400
Oct 09, 202640No prior observation