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Contract OI history

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Jan 15, 2027 EXPIRATION

MAT $21.00 Call

MAT270115C00021000

Latest saved OI31,285Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MAT $21.00 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. 31,28515,6420 2026-10-09: 904 OI2026-10-13: 27,004 OI2026-10-14: 27,004 OI2026-10-15: 30,754 OI2026-10-16: 30,754 OI2026-10-21: 31,285 OI2026-10-23: 31,285 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, 2026Viewing31,2850
Oct 21, 202631,285+531
Oct 16, 202630,7540
Oct 15, 202630,754+3,750
Oct 14, 202627,0040
Oct 13, 202627,004+26,100
Oct 09, 2026904No prior observation