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Contract OI history

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Apr 16, 2027 EXPIRATION

MSFT $640.00 Call

MSFT270416C00640000

Latest saved OI404Oct 23, 2026
Last change+23vs 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. 4042020 2026-10-09: 262 OI2026-10-13: 337 OI2026-10-14: 337 OI2026-10-15: 338 OI2026-10-16: 341 OI2026-10-21: 381 OI2026-10-23: 404 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, 2026Viewing404+23
Oct 21, 2026381+40
Oct 16, 2026341+3
Oct 15, 2026338+1
Oct 14, 20263370
Oct 13, 2026337+75
Oct 09, 2026262No prior observation