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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $525.00 Put

MSFT261218P00525000

Latest saved OI3,341Oct 23, 2026
Last change+263vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $525.00 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. 3,3411,6700 2026-10-09: 2,422 OI2026-10-13: 2,876 OI2026-10-14: 2,876 OI2026-10-15: 2,876 OI2026-10-16: 2,885 OI2026-10-21: 3,078 OI2026-10-23: 3,341 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, 2026Viewing3,341+263
Oct 21, 20263,078+193
Oct 16, 20262,885+9
Oct 15, 20262,8760
Oct 14, 20262,8760
Oct 13, 20262,876+454
Oct 09, 20262,422No prior observation