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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $300.00 Put

MSFT261120P00300000

Latest saved OI3,335Oct 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 $300.00 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. 3,3351,6670 2026-10-09: 3,258 OI2026-10-13: 3,317 OI2026-10-14: 3,317 OI2026-10-15: 3,318 OI2026-10-16: 3,320 OI2026-10-21: 3,310 OI2026-10-23: 3,335 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, 2026Viewing3,335+25
Oct 21, 20263,310-10
Oct 16, 20263,320+2
Oct 15, 20263,318+1
Oct 14, 20263,3170
Oct 13, 20263,317+59
Oct 09, 20263,258No prior observation