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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $640.00 Call

MSFT261120C00640000

Latest saved OI961Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $640.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 9614800 2026-10-09: 493 OI2026-10-13: 593 OI2026-10-14: 593 OI2026-10-15: 643 OI2026-10-16: 810 OI2026-10-21: 960 OI2026-10-23: 961 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, 2026Viewing961+1
Oct 21, 2026960+150
Oct 16, 2026810+167
Oct 15, 2026643+50
Oct 14, 20265930
Oct 13, 2026593+100
Oct 09, 2026493No prior observation