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Contract OI history

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Dec 18, 2026 EXPIRATION

MPC $420.00 Put

MPC261218P00420000

Latest saved OI527Oct 23, 2026
Last change+12vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MPC $420.00 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. 5272630 2026-10-02: 34 OI2026-10-05: 83 OI2026-10-06: 359 OI2026-10-07: 359 OI2026-10-08: 399 OI2026-10-09: 451 OI2026-10-13: 464 OI2026-10-14: 468 OI2026-10-15: 501 OI2026-10-16: 504 OI2026-10-21: 515 OI2026-10-23: 527 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, 2026Viewing527+12
Oct 21, 2026515+11
Oct 16, 2026504+3
Oct 15, 2026501+33
Oct 14, 2026468+4
Oct 13, 2026464+13
Oct 09, 2026451+52
Oct 08, 2026399+40
Oct 07, 20263590
Oct 06, 2026359+276
Oct 05, 202683+49
Oct 02, 202634No prior observation