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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $555.00 Put

MSFT261030P00555000

Latest saved OI1,151Oct 23, 2026
Last change+24vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $555.00 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. 1,1515750 2026-10-09: 33 OI2026-10-13: 1,098 OI2026-10-14: 1,098 OI2026-10-15: 1,098 OI2026-10-16: 1,105 OI2026-10-21: 1,127 OI2026-10-23: 1,151 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, 2026Viewing1,151+24
Oct 21, 20261,127+22
Oct 16, 20261,105+7
Oct 15, 20261,0980
Oct 14, 20261,0980
Oct 13, 20261,098+1,065
Oct 09, 202633No prior observation