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Contract OI history

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Dec 18, 2026 EXPIRATION

MPC $380.00 Put

MPC261218P00380000

Latest saved OI644Oct 23, 2026
Last change+61vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MPC $380.00 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. 6443220 2026-10-02: 409 OI2026-10-05: 411 OI2026-10-06: 411 OI2026-10-07: 411 OI2026-10-08: 411 OI2026-10-09: 420 OI2026-10-13: 420 OI2026-10-14: 513 OI2026-10-15: 517 OI2026-10-16: 540 OI2026-10-21: 583 OI2026-10-23: 644 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, 2026644+61
Oct 21, 2026Viewing583+43
Oct 16, 2026540+23
Oct 15, 2026517+4
Oct 14, 2026513+93
Oct 13, 20264200
Oct 09, 2026420+9
Oct 08, 20264110
Oct 07, 20264110
Oct 06, 20264110
Oct 05, 2026411+2
Oct 02, 2026409No prior observation