OITracker Cboe delayed data

Contract OI history

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Nov 06, 2026 EXPIRATION

MSFT $520.00 Put

MSFT261106P00520000

Latest saved OI421Oct 23, 2026
Last change+25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $520.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4212100 2026-10-09: 314 OI2026-10-13: 367 OI2026-10-14: 367 OI2026-10-15: 362 OI2026-10-16: 365 OI2026-10-21: 396 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+25
Oct 21, 2026396+31
Oct 16, 2026365+3
Oct 15, 2026362-5
Oct 14, 20263670
Oct 13, 2026367+53
Oct 09, 2026314No prior observation