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Contract OI history

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Mar 19, 2027 EXPIRATION

MSFT $450.00 Put

MSFT270319P00450000

Latest saved OI4,874Oct 23, 2026
Last change+138vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $450.00 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. 4,8742,4370 2026-10-09: 4,589 OI2026-10-13: 4,624 OI2026-10-14: 4,624 OI2026-10-15: 4,696 OI2026-10-16: 4,706 OI2026-10-21: 4,736 OI2026-10-23: 4,874 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, 2026Viewing4,874+138
Oct 21, 20264,736+30
Oct 16, 20264,706+10
Oct 15, 20264,696+72
Oct 14, 20264,6240
Oct 13, 20264,624+35
Oct 09, 20264,589No prior observation