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Contract OI history

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Dec 17, 2027 EXPIRATION

MSFT $640.00 Call

MSFT271217C00640000

Latest saved OI3,466Oct 23, 2026
Last change0vs 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. 3,5111,7550 2026-10-09: 3,500 OI2026-10-13: 3,511 OI2026-10-14: 3,511 OI2026-10-15: 3,501 OI2026-10-16: 3,467 OI2026-10-21: 3,466 OI2026-10-23: 3,466 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, 2026Viewing3,4660
Oct 21, 20263,466-1
Oct 16, 20263,467-34
Oct 15, 20263,501-10
Oct 14, 20263,5110
Oct 13, 20263,511+11
Oct 09, 20263,500No prior observation