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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $230.00 Put

MSFT270115P00230000

Latest saved OI691Oct 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 $230.00 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. 7073530 2026-10-09: 707 OI2026-10-13: 701 OI2026-10-14: 701 OI2026-10-15: 701 OI2026-10-16: 701 OI2026-10-21: 689 OI2026-10-23: 691 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, 2026Viewing691+2
Oct 21, 2026689-12
Oct 16, 20267010
Oct 15, 20267010
Oct 14, 20267010
Oct 13, 2026701-6
Oct 09, 2026707No prior observation