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Contract OI history

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Apr 16, 2027 EXPIRATION

MSFT $405.00 Put

MSFT270416P00405000

Latest saved OI851Oct 23, 2026
Last change+99vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $405.00 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. 8514250 2026-10-09: 726 OI2026-10-13: 739 OI2026-10-14: 739 OI2026-10-15: 737 OI2026-10-16: 738 OI2026-10-21: 752 OI2026-10-23: 851 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, 2026Viewing851+99
Oct 21, 2026752+14
Oct 16, 2026738+1
Oct 15, 2026737-2
Oct 14, 20267390
Oct 13, 2026739+13
Oct 09, 2026726No prior observation