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Contract OI history

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Nov 20, 2026 EXPIRATION

MDB $390.00 Put

MDB261120P00390000

Latest saved OI215Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $390.00 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. 2151070 2026-10-09: 64 OI2026-10-13: 65 OI2026-10-14: 65 OI2026-10-15: 65 OI2026-10-16: 66 OI2026-10-21: 214 OI2026-10-23: 215 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, 2026Viewing215+1
Oct 21, 2026214+148
Oct 16, 202666+1
Oct 15, 2026650
Oct 14, 2026650
Oct 13, 202665+1
Oct 09, 202664No prior observation