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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $290.00 Put

MSFT261218P00290000

Latest saved OI1,707Oct 23, 2026
Last change+34vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $290.00 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. 1,7078530 2026-10-09: 1,669 OI2026-10-13: 1,670 OI2026-10-14: 1,670 OI2026-10-15: 1,671 OI2026-10-16: 1,670 OI2026-10-21: 1,673 OI2026-10-23: 1,707 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, 2026Viewing1,707+34
Oct 21, 20261,673+3
Oct 16, 20261,670-1
Oct 15, 20261,671+1
Oct 14, 20261,6700
Oct 13, 20261,670+1
Oct 09, 20261,669No prior observation