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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $365.00 Put

MSFT270115P00365000

Latest saved OI1,771Oct 23, 2026
Last change+23vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $365.00 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. 1,7718850 2026-10-09: 1,733 OI2026-10-13: 1,733 OI2026-10-14: 1,733 OI2026-10-15: 1,733 OI2026-10-16: 1,731 OI2026-10-21: 1,748 OI2026-10-23: 1,771 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, 2026Viewing1,771+23
Oct 21, 20261,748+17
Oct 16, 20261,731-2
Oct 15, 20261,7330
Oct 14, 20261,7330
Oct 13, 20261,7330
Oct 09, 20261,733No prior observation