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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $510.00 Put

MSFT261023P00510000

Latest saved OI3,142Oct 23, 2026
Last change+834vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $510.00 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. 3,1421,5710 2026-10-09: 631 OI2026-10-13: 712 OI2026-10-14: 712 OI2026-10-15: 899 OI2026-10-16: 974 OI2026-10-21: 2,308 OI2026-10-23: 3,142 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, 2026Viewing3,142+834
Oct 21, 20262,308+1,334
Oct 16, 2026974+75
Oct 15, 2026899+187
Oct 14, 20267120
Oct 13, 2026712+81
Oct 09, 2026631No prior observation