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Contract OI history

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Dec 18, 2026 EXPIRATION

MDB $310.00 Put

MDB261218P00310000

Latest saved OI252Oct 23, 2026
Last change-5vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $310.00 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. 2571280 2026-10-09: 236 OI2026-10-13: 238 OI2026-10-14: 238 OI2026-10-15: 236 OI2026-10-16: 238 OI2026-10-21: 257 OI2026-10-23: 252 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, 2026252-5
Oct 21, 2026Viewing257+19
Oct 16, 2026238+2
Oct 15, 2026236-2
Oct 14, 20262380
Oct 13, 2026238+2
Oct 09, 2026236No prior observation