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Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $540.00 Put

MSFT261030P00540000

Latest saved OI1,402Oct 23, 2026
Last change+25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $540.00 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. 1,4027010 2026-10-09: 226 OI2026-10-13: 443 OI2026-10-14: 443 OI2026-10-15: 764 OI2026-10-16: 884 OI2026-10-21: 1,377 OI2026-10-23: 1,402 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, 2026Viewing1,402+25
Oct 21, 20261,377+493
Oct 16, 2026884+120
Oct 15, 2026764+321
Oct 14, 20264430
Oct 13, 2026443+217
Oct 09, 2026226No prior observation