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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $535.00 Put

MSFT261218P00535000

Latest saved OI1,474Oct 23, 2026
Last change-12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $535.00 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. 1,4867430 2026-10-09: 863 OI2026-10-13: 1,017 OI2026-10-14: 1,017 OI2026-10-15: 1,123 OI2026-10-16: 1,188 OI2026-10-21: 1,486 OI2026-10-23: 1,474 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, 2026Viewing1,474-12
Oct 21, 20261,486+298
Oct 16, 20261,188+65
Oct 15, 20261,123+106
Oct 14, 20261,0170
Oct 13, 20261,017+154
Oct 09, 2026863No prior observation