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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $485.00 Put

MSFT261120P00485000

Latest saved OI2,094Oct 23, 2026
Last change+146vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $485.00 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. 2,0941,0470 2026-10-09: 1,967 OI2026-10-13: 2,031 OI2026-10-14: 2,031 OI2026-10-15: 1,851 OI2026-10-16: 1,847 OI2026-10-21: 1,948 OI2026-10-23: 2,094 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, 2026Viewing2,094+146
Oct 21, 20261,948+101
Oct 16, 20261,847-4
Oct 15, 20261,851-180
Oct 14, 20262,0310
Oct 13, 20262,031+64
Oct 09, 20261,967No prior observation