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Contract OI history

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Nov 20, 2026 EXPIRATION

MA $400.00 Put

MA261120P00400000

Latest saved OI174Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $400.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 175870 2026-10-02: 175 OI2026-10-05: 175 OI2026-10-06: 175 OI2026-10-07: 173 OI2026-10-08: 173 OI2026-10-09: 174 OI2026-10-13: 174 OI2026-10-14: 174 OI2026-10-15: 174 OI2026-10-16: 174 OI2026-10-21: 174 OI2026-10-23: 174 OI Oct 02, 2026Oct 23, 2026

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

MA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1740
Oct 21, 20261740
Oct 16, 20261740
Oct 15, 20261740
Oct 14, 20261740
Oct 13, 20261740
Oct 09, 2026174+1
Oct 08, 20261730
Oct 07, 2026173-2
Oct 06, 20261750
Oct 05, 20261750
Oct 02, 2026175No prior observation