OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $665.00 Call

MSFT261218C00665000

Latest saved OI421Oct 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 $665.00 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. 4252120 2026-10-09: 371 OI2026-10-13: 385 OI2026-10-14: 385 OI2026-10-15: 425 OI2026-10-16: 425 OI2026-10-21: 423 OI2026-10-23: 421 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, 2026Viewing421-2
Oct 21, 2026423-2
Oct 16, 20264250
Oct 15, 2026425+40
Oct 14, 20263850
Oct 13, 2026385+14
Oct 09, 2026371No prior observation