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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $290.00 Put

MSFT261120P00290000

Latest saved OI2,381Oct 23, 2026
Last change+111vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $290.00 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. 2,3811,1900 2026-10-09: 2,251 OI2026-10-13: 2,261 OI2026-10-14: 2,261 OI2026-10-15: 2,260 OI2026-10-16: 2,259 OI2026-10-21: 2,270 OI2026-10-23: 2,381 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, 2026Viewing2,381+111
Oct 21, 20262,270+11
Oct 16, 20262,259-1
Oct 15, 20262,260-1
Oct 14, 20262,2610
Oct 13, 20262,261+10
Oct 09, 20262,251No prior observation