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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $500.00 Put

MSFT261030P00500000

Latest saved OI3,530Oct 23, 2026
Last change+88vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $500.00 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. 3,5301,7650 2026-10-09: 2,578 OI2026-10-13: 2,586 OI2026-10-14: 2,586 OI2026-10-15: 2,709 OI2026-10-16: 2,563 OI2026-10-21: 3,442 OI2026-10-23: 3,530 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, 2026Viewing3,530+88
Oct 21, 20263,442+879
Oct 16, 20262,563-146
Oct 15, 20262,709+123
Oct 14, 20262,5860
Oct 13, 20262,586+8
Oct 09, 20262,578No prior observation