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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $530.00 Put

MSFT261030P00530000

Latest saved OI3,359Oct 23, 2026
Last change+967vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $530.00 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. 3,3591,6790 2026-10-09: 994 OI2026-10-13: 1,221 OI2026-10-14: 1,221 OI2026-10-15: 1,188 OI2026-10-16: 1,188 OI2026-10-21: 2,392 OI2026-10-23: 3,359 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, 2026Viewing3,359+967
Oct 21, 20262,392+1,204
Oct 16, 20261,1880
Oct 15, 20261,188-33
Oct 14, 20261,2210
Oct 13, 20261,221+227
Oct 09, 2026994No prior observation