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Contract OI history

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Dec 15, 2028 EXPIRATION

MSFT $300.00 Put

MSFT281215P00300000

Latest saved OI2,955Oct 23, 2026
Last change+35vs 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. 2,9551,4770 2026-10-09: 2,668 OI2026-10-13: 2,666 OI2026-10-14: 2,666 OI2026-10-15: 2,666 OI2026-10-16: 2,836 OI2026-10-21: 2,920 OI2026-10-23: 2,955 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, 2026Viewing2,955+35
Oct 21, 20262,920+84
Oct 16, 20262,836+170
Oct 15, 20262,6660
Oct 14, 20262,6660
Oct 13, 20262,666-2
Oct 09, 20262,668No prior observation