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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $350.00 Put

MSFT270115P00350000

Latest saved OI13,412Oct 23, 2026
Last change-180vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $350.00 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. 13,6496,8240 2026-10-09: 13,649 OI2026-10-13: 13,601 OI2026-10-14: 13,601 OI2026-10-15: 13,600 OI2026-10-16: 13,600 OI2026-10-21: 13,592 OI2026-10-23: 13,412 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, 2026Viewing13,412-180
Oct 21, 202613,592-8
Oct 16, 202613,6000
Oct 15, 202613,600-1
Oct 14, 202613,6010
Oct 13, 202613,601-48
Oct 09, 202613,649No prior observation