OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

MSFT $320.00 Call

MSFT280121C00320000

Latest saved OI283Oct 23, 2026
Last change-111vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $320.00 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. 4072030 2026-10-09: 407 OI2026-10-13: 401 OI2026-10-14: 401 OI2026-10-15: 401 OI2026-10-16: 401 OI2026-10-21: 394 OI2026-10-23: 283 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, 2026Viewing283-111
Oct 21, 2026394-7
Oct 16, 20264010
Oct 15, 20264010
Oct 14, 20264010
Oct 13, 2026401-6
Oct 09, 2026407No prior observation