OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $520.00 Put

MSFT270115P00520000

Latest saved OI2,574Oct 23, 2026
Last change+482vs 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. 2,5741,2870 2026-10-09: 2,336 OI2026-10-13: 2,138 OI2026-10-14: 2,138 OI2026-10-15: 2,141 OI2026-10-16: 2,142 OI2026-10-21: 2,092 OI2026-10-23: 2,574 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, 2026Viewing2,574+482
Oct 21, 20262,092-50
Oct 16, 20262,142+1
Oct 15, 20262,141+3
Oct 14, 20262,1380
Oct 13, 20262,138-198
Oct 09, 20262,336No prior observation