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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $640.00 Call

MSFT270115C00640000

Latest saved OI979Oct 23, 2026
Last change-30vs 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. 1,0095040 2026-10-09: 915 OI2026-10-13: 993 OI2026-10-14: 993 OI2026-10-15: 990 OI2026-10-16: 990 OI2026-10-21: 1,009 OI2026-10-23: 979 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, 2026Viewing979-30
Oct 21, 20261,009+19
Oct 16, 20269900
Oct 15, 2026990-3
Oct 14, 20269930
Oct 13, 2026993+78
Oct 09, 2026915No prior observation