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Contract OI history

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Dec 18, 2026 EXPIRATION

MDB $340.00 Put

MDB261218P00340000

Latest saved OI188Oct 23, 2026
Last change+11vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $340.00 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. 188940 2026-10-09: 161 OI2026-10-13: 163 OI2026-10-14: 163 OI2026-10-15: 174 OI2026-10-16: 174 OI2026-10-21: 177 OI2026-10-23: 188 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, 2026Viewing188+11
Oct 21, 2026177+3
Oct 16, 20261740
Oct 15, 2026174+11
Oct 14, 20261630
Oct 13, 2026163+2
Oct 09, 2026161No prior observation