OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $400.00 Call

MSFT261120C00400000

Latest saved OI4,234Oct 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 $400.00 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. 4,2562,1280 2026-10-09: 4,249 OI2026-10-13: 4,255 OI2026-10-14: 4,255 OI2026-10-15: 4,253 OI2026-10-16: 4,256 OI2026-10-21: 4,236 OI2026-10-23: 4,234 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, 2026Viewing4,234-2
Oct 21, 20264,236-20
Oct 16, 20264,256+3
Oct 15, 20264,253-2
Oct 14, 20264,2550
Oct 13, 20264,255+6
Oct 09, 20264,249No prior observation