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Contract OI history

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Jun 17, 2027 EXPIRATION

MSFT $350.00 Put

MSFT270617P00350000

Latest saved OI8,629Oct 23, 2026
Last change+51vs 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. 8,7074,3530 2026-10-09: 8,283 OI2026-10-13: 8,707 OI2026-10-14: 8,707 OI2026-10-15: 8,707 OI2026-10-16: 8,707 OI2026-10-21: 8,578 OI2026-10-23: 8,629 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, 2026Viewing8,629+51
Oct 21, 20268,578-129
Oct 16, 20268,7070
Oct 15, 20268,7070
Oct 14, 20268,7070
Oct 13, 20268,707+424
Oct 09, 20268,283No prior observation