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Contract OI history

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Dec 15, 2028 EXPIRATION

MSFT $290.00 Put

MSFT281215P00290000

Latest saved OI1,122Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $290.00 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. 1,1245620 2026-10-09: 1,124 OI2026-10-13: 1,123 OI2026-10-14: 1,123 OI2026-10-15: 1,122 OI2026-10-16: 1,122 OI2026-10-21: 1,122 OI2026-10-23: 1,122 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, 2026Viewing1,1220
Oct 21, 20261,1220
Oct 16, 20261,1220
Oct 15, 20261,122-1
Oct 14, 20261,1230
Oct 13, 20261,123-1
Oct 09, 20261,124No prior observation