OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

MRAM $40.00 Call

MRAM261218C00040000

Latest saved OI1,992Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
MRAM $40.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 1,9999990 2026-10-08: 1,999 OI2026-10-09: 1,999 OI2026-10-13: 1,999 OI2026-10-14: 1,994 OI2026-10-16: 1,993 OI2026-10-20: 1,993 OI2026-10-23: 1,992 OI Oct 08, 2026Oct 23, 2026

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

MRAM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,992-1
Oct 20, 20261,9930
Oct 16, 20261,993-1
Oct 14, 20261,994-5
Oct 13, 20261,9990
Oct 09, 20261,9990
Oct 08, 20261,999No prior observation