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Contract OI history

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Jan 15, 2027 EXPIRATION

MSFT $540.00 Put

MSFT270115P00540000

Latest saved OI3,833Oct 23, 2026
Last change-17vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $540.00 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. 3,8501,9250 2026-10-09: 408 OI2026-10-13: 3,823 OI2026-10-14: 3,823 OI2026-10-15: 3,831 OI2026-10-16: 3,850 OI2026-10-21: 3,850 OI2026-10-23: 3,833 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, 2026Viewing3,833-17
Oct 21, 20263,8500
Oct 16, 20263,850+19
Oct 15, 20263,831+8
Oct 14, 20263,8230
Oct 13, 20263,823+3,415
Oct 09, 2026408No prior observation