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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $505.00 Put

MSFT261030P00505000

Latest saved OI569Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $505.00 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. 5692840 2026-10-09: 327 OI2026-10-13: 388 OI2026-10-14: 388 OI2026-10-15: 399 OI2026-10-16: 412 OI2026-10-21: 566 OI2026-10-23: 569 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, 2026Viewing569+3
Oct 21, 2026566+154
Oct 16, 2026412+13
Oct 15, 2026399+11
Oct 14, 20263880
Oct 13, 2026388+61
Oct 09, 2026327No prior observation