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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $310.00 Put

MSFT261023P00310000

Latest saved OI3,444Oct 23, 2026
Last change-11vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $310.00 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. 3,4551,7270 2026-10-09: 10 OI2026-10-13: 10 OI2026-10-14: 10 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-21: 3,455 OI2026-10-23: 3,444 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, 2026Viewing3,444-11
Oct 21, 20263,455+3,445
Oct 16, 2026100
Oct 15, 2026100
Oct 14, 2026100
Oct 13, 2026100
Oct 09, 202610No prior observation