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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $800.00 Call

MSFT261218C00800000

Latest saved OI3,938Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $800.00 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. 3,9401,9700 2026-10-09: 3,686 OI2026-10-13: 3,830 OI2026-10-14: 3,830 OI2026-10-15: 3,830 OI2026-10-16: 3,830 OI2026-10-21: 3,940 OI2026-10-23: 3,938 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, 2026Viewing3,938-2
Oct 21, 20263,940+110
Oct 16, 20263,8300
Oct 15, 20263,8300
Oct 14, 20263,8300
Oct 13, 20263,830+144
Oct 09, 20263,686No prior observation