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Contract OI history

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Jan 21, 2028 EXPIRATION

MSFT $380.00 Put

MSFT280121P00380000

Latest saved OI2,940Oct 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 $380.00 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. 2,9491,4740 2026-10-09: 2,949 OI2026-10-13: 2,942 OI2026-10-14: 2,942 OI2026-10-15: 2,943 OI2026-10-16: 2,943 OI2026-10-21: 2,940 OI2026-10-23: 2,940 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, 2026Viewing2,9400
Oct 21, 20262,940-3
Oct 16, 20262,9430
Oct 15, 20262,943+1
Oct 14, 20262,9420
Oct 13, 20262,942-7
Oct 09, 20262,949No prior observation