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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $355.00 Put

MSFT261120P00355000

Latest saved OI3,119Oct 23, 2026
Last change+394vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $355.00 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. 3,1191,5590 2026-10-09: 2,723 OI2026-10-13: 2,722 OI2026-10-14: 2,722 OI2026-10-15: 2,722 OI2026-10-16: 2,724 OI2026-10-21: 2,725 OI2026-10-23: 3,119 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, 2026Viewing3,119+394
Oct 21, 20262,725+1
Oct 16, 20262,724+2
Oct 15, 20262,7220
Oct 14, 20262,7220
Oct 13, 20262,722-1
Oct 09, 20262,723No prior observation