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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $520.00 Put

MSFT261120P00520000

Latest saved OI1,985Oct 23, 2026
Last change+31vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $520.00 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. 1,9859920 2026-10-09: 1,458 OI2026-10-13: 1,553 OI2026-10-14: 1,553 OI2026-10-15: 1,663 OI2026-10-16: 1,728 OI2026-10-21: 1,954 OI2026-10-23: 1,985 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, 2026Viewing1,985+31
Oct 21, 20261,954+226
Oct 16, 20261,728+65
Oct 15, 20261,663+110
Oct 14, 20261,5530
Oct 13, 20261,553+95
Oct 09, 20261,458No prior observation