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Contract OI history

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Mar 19, 2027 EXPIRATION

MSFT $440.00 Put

MSFT270319P00440000

Latest saved OI3,684Oct 23, 2026
Last change+161vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $440.00 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. 3,6841,8420 2026-10-09: 3,610 OI2026-10-13: 3,622 OI2026-10-14: 3,622 OI2026-10-15: 3,634 OI2026-10-16: 3,636 OI2026-10-21: 3,523 OI2026-10-23: 3,684 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, 2026Viewing3,684+161
Oct 21, 20263,523-113
Oct 16, 20263,636+2
Oct 15, 20263,634+12
Oct 14, 20263,6220
Oct 13, 20263,622+12
Oct 09, 20263,610No prior observation