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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $220.00 Put

MSFT261120P00220000

Latest saved OI215Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $220.00 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. 3511750 2026-10-09: 351 OI2026-10-13: 351 OI2026-10-14: 351 OI2026-10-15: 215 OI2026-10-16: 215 OI2026-10-21: 215 OI2026-10-23: 215 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, 2026Viewing2150
Oct 21, 20262150
Oct 16, 20262150
Oct 15, 2026215-136
Oct 14, 20263510
Oct 13, 20263510
Oct 09, 2026351No prior observation