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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $535.00 Put

MSFT261120P00535000

Latest saved OI3,360Oct 23, 2026
Last change+28vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $535.00 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. 3,3601,6800 2026-10-09: 2,015 OI2026-10-13: 2,095 OI2026-10-14: 2,095 OI2026-10-15: 2,156 OI2026-10-16: 2,261 OI2026-10-21: 3,332 OI2026-10-23: 3,360 OI Oct 09, 2026Oct 23, 2026

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

MSFT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,360+28
Oct 21, 20263,332+1,071
Oct 16, 20262,261+105
Oct 15, 20262,156+61
Oct 14, 20262,0950
Oct 13, 20262,095+80
Oct 09, 20262,015No prior observation