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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $450.00 Put

MSFT270115P00450000

Latest saved OI18,569Oct 23, 2026
Last change+1,018vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $450.00 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. 18,5699,2840 2026-10-09: 16,264 OI2026-10-13: 17,718 OI2026-10-14: 17,718 OI2026-10-15: 17,707 OI2026-10-16: 17,696 OI2026-10-21: 17,551 OI2026-10-23: 18,569 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, 2026Viewing18,569+1,018
Oct 21, 202617,551-145
Oct 16, 202617,696-11
Oct 15, 202617,707-11
Oct 14, 202617,7180
Oct 13, 202617,718+1,454
Oct 09, 202616,264No prior observation