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Contract OI history

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Mar 19, 2027 EXPIRATION

MPC $420.00 Put

MPC270319P00420000

Latest saved OI545Oct 23, 2026
Last change+1vs 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. 5452720 2026-10-02: 254 OI2026-10-05: 254 OI2026-10-06: 254 OI2026-10-07: 254 OI2026-10-08: 254 OI2026-10-09: 255 OI2026-10-13: 524 OI2026-10-14: 535 OI2026-10-15: 536 OI2026-10-16: 536 OI2026-10-21: 544 OI2026-10-23: 545 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, 2026545+1
Oct 21, 2026Viewing544+8
Oct 16, 20265360
Oct 15, 2026536+1
Oct 14, 2026535+11
Oct 13, 2026524+269
Oct 09, 2026255+1
Oct 08, 20262540
Oct 07, 20262540
Oct 06, 20262540
Oct 05, 20262540
Oct 02, 2026254No prior observation