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Contract OI history

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Sep 17, 2027 EXPIRATION

MSFT $635.00 Put

MSFT270917P00635000

Latest saved OI105Oct 23, 2026
Last change+102vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $635.00 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. 105520 2026-10-09: 1 OI2026-10-13: 3 OI2026-10-14: 3 OI2026-10-15: 3 OI2026-10-16: 3 OI2026-10-21: 3 OI2026-10-23: 105 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, 2026Viewing105+102
Oct 21, 202630
Oct 16, 202630
Oct 15, 202630
Oct 14, 202630
Oct 13, 20263+2
Oct 09, 20261No prior observation