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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $535.00 Put

MSFT261023P00535000

Latest saved OI380Oct 23, 2026
Last change-1,175vs 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. 1,5557770 2026-10-09: 409 OI2026-10-13: 1,322 OI2026-10-14: 1,322 OI2026-10-15: 1,440 OI2026-10-16: 1,495 OI2026-10-21: 1,555 OI2026-10-23: 380 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, 2026Viewing380-1,175
Oct 21, 20261,555+60
Oct 16, 20261,495+55
Oct 15, 20261,440+118
Oct 14, 20261,3220
Oct 13, 20261,322+913
Oct 09, 2026409No prior observation