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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $550.00 Put

MSFT261030P00550000

Latest saved OI193Oct 23, 2026
Last change+4vs 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. 193960 2026-10-09: 34 OI2026-10-13: 155 OI2026-10-14: 155 OI2026-10-15: 183 OI2026-10-16: 185 OI2026-10-21: 189 OI2026-10-23: 193 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, 2026Viewing193+4
Oct 21, 2026189+4
Oct 16, 2026185+2
Oct 15, 2026183+28
Oct 14, 20261550
Oct 13, 2026155+121
Oct 09, 202634No prior observation