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Contract OI history

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Apr 16, 2027 EXPIRATION

MSFT $525.00 Put

MSFT270416P00525000

Latest saved OI172Oct 23, 2026
Last change+25vs 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. 172860 2026-10-09: 108 OI2026-10-13: 95 OI2026-10-14: 95 OI2026-10-15: 96 OI2026-10-16: 138 OI2026-10-21: 147 OI2026-10-23: 172 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, 2026Viewing172+25
Oct 21, 2026147+9
Oct 16, 2026138+42
Oct 15, 202696+1
Oct 14, 2026950
Oct 13, 202695-13
Oct 09, 2026108No prior observation