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Contract OI history

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Jan 21, 2028 EXPIRATION

MDB $320.00 Put

MDB280121P00320000

Latest saved OI64Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $320.00 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. 64320 2026-10-09: 64 OI2026-10-13: 64 OI2026-10-14: 64 OI2026-10-15: 64 OI2026-10-16: 64 OI2026-10-21: 64 OI2026-10-23: 64 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, 2026640
Oct 21, 2026Viewing640
Oct 16, 2026640
Oct 15, 2026640
Oct 14, 2026640
Oct 13, 2026640
Oct 09, 202664No prior observation