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Contract OI history

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Mar 19, 2027 EXPIRATION

MATW $17.50 Put

MATW270319P00017500

Latest saved OI455Oct 23, 2026
Last change+5vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
MATW $17.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 4552270 2026-10-08: 449 OI2026-10-09: 449 OI2026-10-13: 450 OI2026-10-14: 450 OI2026-10-16: 450 OI2026-10-20: 450 OI2026-10-23: 455 OI Oct 08, 2026Oct 23, 2026

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

MATW contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing455+5
Oct 20, 20264500
Oct 16, 20264500
Oct 14, 20264500
Oct 13, 2026450+1
Oct 09, 20264490
Oct 08, 2026449No prior observation