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Contract OI history

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Nov 20, 2026 EXPIRATION

MAMA $12.50 Put

MAMA261120P00012500

Latest saved OI131Oct 23, 2026
Last change+12vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
MAMA $12.50 put open interest history 6 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 131650 2026-10-08: 51 OI2026-10-13: 51 OI2026-10-14: 51 OI2026-10-16: 51 OI2026-10-20: 119 OI2026-10-23: 131 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, 2026131+12
Oct 20, 2026Viewing119+68
Oct 16, 2026510
Oct 14, 2026510
Oct 13, 2026510
Oct 08, 202651No prior observation