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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $540.00 Put

MSFT261023P00540000

Latest saved OI186Oct 23, 2026
Last change-5,303vs 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. 5,4892,7440 2026-10-09: 124 OI2026-10-13: 807 OI2026-10-14: 807 OI2026-10-15: 770 OI2026-10-16: 835 OI2026-10-21: 5,489 OI2026-10-23: 186 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, 2026Viewing186-5,303
Oct 21, 20265,489+4,654
Oct 16, 2026835+65
Oct 15, 2026770-37
Oct 14, 20268070
Oct 13, 2026807+683
Oct 09, 2026124No prior observation