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Contract OI history

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Dec 18, 2026 EXPIRATION

MDB $350.00 Put

MDB261218P00350000

Latest saved OI417Oct 23, 2026
Last change-16vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $350.00 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. 4422210 2026-10-09: 442 OI2026-10-13: 440 OI2026-10-14: 440 OI2026-10-15: 437 OI2026-10-16: 433 OI2026-10-21: 433 OI2026-10-23: 417 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, 2026417-16
Oct 21, 2026Viewing4330
Oct 16, 2026433-4
Oct 15, 2026437-3
Oct 14, 20264400
Oct 13, 2026440-2
Oct 09, 2026442No prior observation