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Contract OI history

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Dec 17, 2027 EXPIRATION

MSFT $390.00 Put

MSFT271217P00390000

Latest saved OI605Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $390.00 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. 6053020 2026-10-09: 517 OI2026-10-13: 516 OI2026-10-14: 516 OI2026-10-15: 566 OI2026-10-16: 566 OI2026-10-21: 602 OI2026-10-23: 605 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, 2026Viewing605+3
Oct 21, 2026602+36
Oct 16, 20265660
Oct 15, 2026566+50
Oct 14, 20265160
Oct 13, 2026516-1
Oct 09, 2026517No prior observation