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Contract OI history

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Dec 18, 2026 EXPIRATION

MDB $290.00 Put

MDB261218P00290000

Latest saved OI353Oct 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 $290.00 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. 3581790 2026-10-09: 295 OI2026-10-13: 358 OI2026-10-14: 358 OI2026-10-15: 350 OI2026-10-16: 351 OI2026-10-21: 352 OI2026-10-23: 353 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, 2026353+1
Oct 21, 2026Viewing352+1
Oct 16, 2026351+1
Oct 15, 2026350-8
Oct 14, 20263580
Oct 13, 2026358+63
Oct 09, 2026295No prior observation