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Contract OI history

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Dec 18, 2026 EXPIRATION

MAT $16.00 Put

MAT261218P00016000

Latest saved OI6,225Oct 23, 2026
Last change+4,003vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MAT $16.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 6,2253,1120 2026-10-09: 2,012 OI2026-10-13: 2,137 OI2026-10-14: 2,137 OI2026-10-15: 2,151 OI2026-10-16: 2,151 OI2026-10-21: 2,222 OI2026-10-23: 6,225 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, 20266,225+4,003
Oct 21, 2026Viewing2,222+71
Oct 16, 20262,1510
Oct 15, 20262,151+14
Oct 14, 20262,1370
Oct 13, 20262,137+125
Oct 09, 20262,012No prior observation