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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $320.00 Put

MSFT270115P00320000

Latest saved OI7,030Oct 23, 2026
Last change+103vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $320.00 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. 7,0303,5150 2026-10-09: 6,931 OI2026-10-13: 6,931 OI2026-10-14: 6,931 OI2026-10-15: 6,931 OI2026-10-16: 6,929 OI2026-10-21: 6,927 OI2026-10-23: 7,030 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, 2026Viewing7,030+103
Oct 21, 20266,927-2
Oct 16, 20266,929-2
Oct 15, 20266,9310
Oct 14, 20266,9310
Oct 13, 20266,9310
Oct 09, 20266,931No prior observation