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Contract OI history

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Dec 18, 2026 EXPIRATION

MARA $18.00 Put

MARA261218P00018000

Latest saved OI81Oct 23, 2026
Last change-358vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MARA $18.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4692340 2026-10-09: 469 OI2026-10-13: 469 OI2026-10-14: 469 OI2026-10-15: 434 OI2026-10-16: 434 OI2026-10-21: 439 OI2026-10-23: 81 OI Oct 09, 2026Oct 23, 2026

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

MARA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing81-358
Oct 21, 2026439+5
Oct 16, 20264340
Oct 15, 2026434-35
Oct 14, 20264690
Oct 13, 20264690
Oct 09, 2026469No prior observation