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Contract OI history

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Dec 18, 2026 EXPIRATION

MAT $20.00 Call

MAT261218C00020000

Latest saved OI1,633Oct 23, 2026
Last change+893vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MAT $20.00 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. 1,6338160 2026-10-09: 106 OI2026-10-13: 113 OI2026-10-14: 113 OI2026-10-15: 113 OI2026-10-16: 298 OI2026-10-21: 740 OI2026-10-23: 1,633 OI Oct 09, 2026Oct 23, 2026

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

MAT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,633+893
Oct 21, 2026Viewing740+442
Oct 16, 2026298+185
Oct 15, 20261130
Oct 14, 20261130
Oct 13, 2026113+7
Oct 09, 2026106No prior observation