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Contract OI history

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Jun 17, 2027 EXPIRATION

MSFT $540.00 Put

MSFT270617P00540000

Latest saved OI1,097Oct 23, 2026
Last change+21vs 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. 1,0975480 2026-10-09: 539 OI2026-10-13: 903 OI2026-10-14: 903 OI2026-10-15: 899 OI2026-10-16: 899 OI2026-10-21: 1,076 OI2026-10-23: 1,097 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, 2026Viewing1,097+21
Oct 21, 20261,076+177
Oct 16, 20268990
Oct 15, 2026899-4
Oct 14, 20269030
Oct 13, 2026903+364
Oct 09, 2026539No prior observation