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Contract OI history

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Mar 19, 2027 EXPIRATION

MDB $420.00 Put

MDB270319P00420000

Latest saved OI149Oct 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 $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. 149740 2026-10-09: 143 OI2026-10-13: 143 OI2026-10-14: 143 OI2026-10-15: 143 OI2026-10-16: 145 OI2026-10-21: 149 OI2026-10-23: 149 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, 20261490
Oct 21, 2026Viewing149+4
Oct 16, 2026145+2
Oct 15, 20261430
Oct 14, 20261430
Oct 13, 20261430
Oct 09, 2026143No prior observation