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Contract OI history

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Oct 26, 2026 EXPIRATION

MSFT $550.00 Put

MSFT261026P00550000

Latest saved OI9Oct 23, 2026
Last change-18vs 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. 27130 2026-10-09: 0 OI2026-10-13: 22 OI2026-10-14: 22 OI2026-10-15: 19 OI2026-10-16: 19 OI2026-10-21: 27 OI2026-10-23: 9 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, 2026Viewing9-18
Oct 21, 202627+8
Oct 16, 2026190
Oct 15, 202619-3
Oct 14, 2026220
Oct 13, 202622+22
Oct 09, 20260No prior observation