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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $190.00 Put

MSFT261218P00190000

Latest saved OI587Oct 23, 2026
Last change+30vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $190.00 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. 5872930 2026-10-09: 521 OI2026-10-13: 538 OI2026-10-14: 538 OI2026-10-15: 538 OI2026-10-16: 557 OI2026-10-21: 557 OI2026-10-23: 587 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, 2026Viewing587+30
Oct 21, 20265570
Oct 16, 2026557+19
Oct 15, 20265380
Oct 14, 20265380
Oct 13, 2026538+17
Oct 09, 2026521No prior observation