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Contract OI history

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Mar 19, 2027 EXPIRATION

MARA $21.00 Call

MARA270319C00021000

Latest saved OI432Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MARA $21.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4322160 2026-10-09: 167 OI2026-10-13: 366 OI2026-10-14: 366 OI2026-10-15: 427 OI2026-10-16: 431 OI2026-10-21: 432 OI2026-10-23: 432 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, 2026Viewing4320
Oct 21, 2026432+1
Oct 16, 2026431+4
Oct 15, 2026427+61
Oct 14, 20263660
Oct 13, 2026366+199
Oct 09, 2026167No prior observation