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Contract OI history

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Nov 06, 2026 EXPIRATION

MSFT $550.00 Put

MSFT261106P00550000

Latest saved OI321Oct 23, 2026
Last change-10vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $550.00 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. 3311650 2026-10-09: 260 OI2026-10-13: 282 OI2026-10-14: 282 OI2026-10-15: 280 OI2026-10-16: 324 OI2026-10-21: 331 OI2026-10-23: 321 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, 2026Viewing321-10
Oct 21, 2026331+7
Oct 16, 2026324+44
Oct 15, 2026280-2
Oct 14, 20262820
Oct 13, 2026282+22
Oct 09, 2026260No prior observation