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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $542.50 Put

MSFT261023P00542500

Latest saved OI47Oct 23, 2026
Last change-128vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $542.50 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. 175870 2026-10-09: 0 OI2026-10-13: 110 OI2026-10-14: 110 OI2026-10-15: 142 OI2026-10-16: 137 OI2026-10-21: 175 OI2026-10-23: 47 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, 2026Viewing47-128
Oct 21, 2026175+38
Oct 16, 2026137-5
Oct 15, 2026142+32
Oct 14, 20261100
Oct 13, 2026110+110
Oct 09, 20260No prior observation