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Contract OI history

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Dec 18, 2026 EXPIRATION

MPC $400.00 Put

MPC261218P00400000

Latest saved OI943Oct 23, 2026
Last change-8vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MPC $400.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 9514750 2026-10-02: 707 OI2026-10-05: 706 OI2026-10-06: 696 OI2026-10-07: 696 OI2026-10-08: 772 OI2026-10-09: 851 OI2026-10-13: 811 OI2026-10-14: 833 OI2026-10-15: 840 OI2026-10-16: 884 OI2026-10-21: 951 OI2026-10-23: 943 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MPC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026943-8
Oct 21, 2026Viewing951+67
Oct 16, 2026884+44
Oct 15, 2026840+7
Oct 14, 2026833+22
Oct 13, 2026811-40
Oct 09, 2026851+79
Oct 08, 2026772+76
Oct 07, 20266960
Oct 06, 2026696-10
Oct 05, 2026706-1
Oct 02, 2026707No prior observation