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Contract OI history

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Nov 06, 2026 EXPIRATION

MSFT $507.50 Put

MSFT261106P00507500

Latest saved OI317Oct 23, 2026
Last change+285vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $507.50 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 3171580 2026-10-21: 32 OI2026-10-23: 317 OI Oct 21, 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, 2026Viewing317+285
Oct 21, 202632No prior observation