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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $545.00 Put

MSFT270115P00545000

Latest saved OI593Oct 23, 2026
Last change+20vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $545.00 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. 5932960 2026-10-09: 191 OI2026-10-13: 198 OI2026-10-14: 198 OI2026-10-15: 224 OI2026-10-16: 424 OI2026-10-21: 573 OI2026-10-23: 593 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, 2026Viewing593+20
Oct 21, 2026573+149
Oct 16, 2026424+200
Oct 15, 2026224+26
Oct 14, 20261980
Oct 13, 2026198+7
Oct 09, 2026191No prior observation