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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $450.00 Put

MSFT261023P00450000

Latest saved OI2,868Oct 23, 2026
Last change+7vs 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. 2,8681,4340 2026-10-09: 472 OI2026-10-13: 461 OI2026-10-14: 461 OI2026-10-15: 486 OI2026-10-16: 528 OI2026-10-21: 2,861 OI2026-10-23: 2,868 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, 2026Viewing2,868+7
Oct 21, 20262,861+2,333
Oct 16, 2026528+42
Oct 15, 2026486+25
Oct 14, 20264610
Oct 13, 2026461-11
Oct 09, 2026472No prior observation