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Contract OI history

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Sep 17, 2027 EXPIRATION

MSFT $365.00 Put

MSFT270917P00365000

Latest saved OI518Oct 23, 2026
Last change0vs 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. 5182590 2026-10-09: 324 OI2026-10-13: 514 OI2026-10-14: 514 OI2026-10-15: 514 OI2026-10-16: 514 OI2026-10-21: 518 OI2026-10-23: 518 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, 2026Viewing5180
Oct 21, 2026518+4
Oct 16, 20265140
Oct 15, 20265140
Oct 14, 20265140
Oct 13, 2026514+190
Oct 09, 2026324No prior observation