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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $525.00 Put

MSFT261030P00525000

Latest saved OI1,526Oct 23, 2026
Last change+136vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $525.00 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. 1,5267630 2026-10-09: 1,243 OI2026-10-13: 1,358 OI2026-10-14: 1,358 OI2026-10-15: 1,456 OI2026-10-16: 1,490 OI2026-10-21: 1,390 OI2026-10-23: 1,526 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, 2026Viewing1,526+136
Oct 21, 20261,390-100
Oct 16, 20261,490+34
Oct 15, 20261,456+98
Oct 14, 20261,3580
Oct 13, 20261,358+115
Oct 09, 20261,243No prior observation