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Contract OI history

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Mar 19, 2027 EXPIRATION

MSFT $380.00 Put

MSFT270319P00380000

Latest saved OI3,595Oct 23, 2026
Last change+153vs 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. 3,5951,7970 2026-10-09: 3,432 OI2026-10-13: 3,451 OI2026-10-14: 3,451 OI2026-10-15: 3,451 OI2026-10-16: 3,454 OI2026-10-21: 3,442 OI2026-10-23: 3,595 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, 2026Viewing3,595+153
Oct 21, 20263,442-12
Oct 16, 20263,454+3
Oct 15, 20263,4510
Oct 14, 20263,4510
Oct 13, 20263,451+19
Oct 09, 20263,432No prior observation