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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $550.00 Put

MSFT270115P00550000

Latest saved OI936Oct 23, 2026
Last change-1vs 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. 9374680 2026-10-09: 724 OI2026-10-13: 847 OI2026-10-14: 847 OI2026-10-15: 845 OI2026-10-16: 927 OI2026-10-21: 937 OI2026-10-23: 936 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, 2026Viewing936-1
Oct 21, 2026937+10
Oct 16, 2026927+82
Oct 15, 2026845-2
Oct 14, 20268470
Oct 13, 2026847+123
Oct 09, 2026724No prior observation