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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $500.00 Put

MSFT261023P00500000

Latest saved OI3,613Oct 23, 2026
Last change+309vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $500.00 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. 3,6131,8060 2026-10-09: 1,998 OI2026-10-13: 2,262 OI2026-10-14: 2,262 OI2026-10-15: 2,191 OI2026-10-16: 2,693 OI2026-10-21: 3,304 OI2026-10-23: 3,613 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, 2026Viewing3,613+309
Oct 21, 20263,304+611
Oct 16, 20262,693+502
Oct 15, 20262,191-71
Oct 14, 20262,2620
Oct 13, 20262,262+264
Oct 09, 20261,998No prior observation