OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $325.00 Put

MSFT270115P00325000

Latest saved OI2,406Oct 23, 2026
Last change+349vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $325.00 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. 2,4061,2030 2026-10-09: 1,942 OI2026-10-13: 1,940 OI2026-10-14: 1,940 OI2026-10-15: 2,049 OI2026-10-16: 2,057 OI2026-10-21: 2,057 OI2026-10-23: 2,406 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, 2026Viewing2,406+349
Oct 21, 20262,0570
Oct 16, 20262,057+8
Oct 15, 20262,049+109
Oct 14, 20261,9400
Oct 13, 20261,940-2
Oct 09, 20261,942No prior observation