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Contract OI history

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Dec 18, 2026 EXPIRATION

MAT $18.00 Call

MAT261218C00018000

Latest saved OI5,613Oct 23, 2026
Last change+4,250vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MAT $18.00 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. 5,6132,8060 2026-10-09: 1,185 OI2026-10-13: 1,220 OI2026-10-14: 1,220 OI2026-10-15: 1,240 OI2026-10-16: 1,257 OI2026-10-21: 1,363 OI2026-10-23: 5,613 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, 20265,613+4,250
Oct 21, 2026Viewing1,363+106
Oct 16, 20261,257+17
Oct 15, 20261,240+20
Oct 14, 20261,2200
Oct 13, 20261,220+35
Oct 09, 20261,185No prior observation