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Contract OI history

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Nov 20, 2026 EXPIRATION

MA $505.00 Put

MA261120P00505000

Latest saved OI217Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $505.00 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. 2291140 2026-10-02: 195 OI2026-10-05: 195 OI2026-10-06: 209 OI2026-10-07: 219 OI2026-10-08: 219 OI2026-10-09: 229 OI2026-10-13: 222 OI2026-10-14: 222 OI2026-10-15: 216 OI2026-10-16: 216 OI2026-10-21: 216 OI2026-10-23: 217 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, 2026Viewing217+1
Oct 21, 20262160
Oct 16, 20262160
Oct 15, 2026216-6
Oct 14, 20262220
Oct 13, 2026222-7
Oct 09, 2026229+10
Oct 08, 20262190
Oct 07, 2026219+10
Oct 06, 2026209+14
Oct 05, 20261950
Oct 02, 2026195No prior observation