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Contract OI history

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Dec 18, 2026 EXPIRATION

MSFT $490.00 Put

MSFT261218P00490000

Latest saved OI3,730Oct 23, 2026
Last change+301vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $490.00 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. 3,7301,8650 2026-10-09: 2,358 OI2026-10-13: 3,093 OI2026-10-14: 3,093 OI2026-10-15: 3,089 OI2026-10-16: 3,092 OI2026-10-21: 3,429 OI2026-10-23: 3,730 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, 2026Viewing3,730+301
Oct 21, 20263,429+337
Oct 16, 20263,092+3
Oct 15, 20263,089-4
Oct 14, 20263,0930
Oct 13, 20263,093+735
Oct 09, 20262,358No prior observation