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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $365.00 Put

MSFT261218P00365000

Latest saved OI3,324Oct 23, 2026
Last change+12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $365.00 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. 3,3471,6730 2026-10-09: 3,345 OI2026-10-13: 3,347 OI2026-10-14: 3,347 OI2026-10-15: 3,345 OI2026-10-16: 3,308 OI2026-10-21: 3,312 OI2026-10-23: 3,324 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, 2026Viewing3,324+12
Oct 21, 20263,312+4
Oct 16, 20263,308-37
Oct 15, 20263,345-2
Oct 14, 20263,3470
Oct 13, 20263,347+2
Oct 09, 20263,345No prior observation