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Contract OI history

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Dec 18, 2026 EXPIRATION

MPC $340.00 Put

MPC261218P00340000

Latest saved OI250Oct 23, 2026
Last change+43vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MPC $340.00 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. 2501250 2026-10-02: 161 OI2026-10-05: 161 OI2026-10-06: 161 OI2026-10-07: 161 OI2026-10-08: 163 OI2026-10-09: 165 OI2026-10-13: 165 OI2026-10-14: 165 OI2026-10-15: 164 OI2026-10-16: 164 OI2026-10-21: 207 OI2026-10-23: 250 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, 2026250+43
Oct 21, 2026Viewing207+43
Oct 16, 20261640
Oct 15, 2026164-1
Oct 14, 20261650
Oct 13, 20261650
Oct 09, 2026165+2
Oct 08, 2026163+2
Oct 07, 20261610
Oct 06, 20261610
Oct 05, 20261610
Oct 02, 2026161No prior observation