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Contract OI history

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Dec 18, 2026 EXPIRATION

MDB $390.00 Put

MDB261218P00390000

Latest saved OI501Oct 23, 2026
Last change+10vs 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. 5012500 2026-10-09: 498 OI2026-10-13: 498 OI2026-10-14: 498 OI2026-10-15: 492 OI2026-10-16: 492 OI2026-10-21: 491 OI2026-10-23: 501 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, 2026501+10
Oct 21, 2026Viewing491-1
Oct 16, 20264920
Oct 15, 2026492-6
Oct 14, 20264980
Oct 13, 20264980
Oct 09, 2026498No prior observation