OITracker Cboe delayed data

Contract OI history

Back to MAMA

Dec 18, 2026 EXPIRATION

MAMA $25.00 Call

MAMA261218C00025000

Latest saved OI271Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
MAMA $25.00 call open interest history 6 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2711350 2026-10-08: 271 OI2026-10-13: 271 OI2026-10-14: 271 OI2026-10-16: 271 OI2026-10-20: 271 OI2026-10-23: 271 OI Oct 08, 2026Oct 23, 2026

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

MAMA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20262710
Oct 20, 2026Viewing2710
Oct 16, 20262710
Oct 14, 20262710
Oct 13, 20262710
Oct 08, 2026271No prior observation