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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $555.00 Put

MSFT261023P00555000

Latest saved OI0Oct 23, 2026
Last change-2,165vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $555.00 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. 2,2141,1070 2026-10-09: 25 OI2026-10-13: 2,214 OI2026-10-14: 2,214 OI2026-10-15: 2,173 OI2026-10-16: 2,173 OI2026-10-21: 2,165 OI2026-10-23: 0 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, 2026Viewing0-2,165
Oct 21, 20262,165-8
Oct 16, 20262,1730
Oct 15, 20262,173-41
Oct 14, 20262,2140
Oct 13, 20262,214+2,189
Oct 09, 202625No prior observation