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Contract OI history

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Jan 15, 2027 EXPIRATION

MDB $400.00 Put

MDB270115P00400000

Latest saved OI123Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDB $400.00 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. 142710 2026-10-09: 110 OI2026-10-13: 130 OI2026-10-14: 130 OI2026-10-15: 132 OI2026-10-16: 142 OI2026-10-21: 121 OI2026-10-23: 123 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, 2026123+2
Oct 21, 2026Viewing121-21
Oct 16, 2026142+10
Oct 15, 2026132+2
Oct 14, 20261300
Oct 13, 2026130+20
Oct 09, 2026110No prior observation