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Contract OI history

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Oct 23, 2026 EXPIRATION

MSFT $492.50 Put

MSFT261023P00492500

Latest saved OI1,286Oct 23, 2026
Last change+867vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $492.50 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. 1,2866430 2026-10-09: 392 OI2026-10-13: 389 OI2026-10-14: 389 OI2026-10-15: 387 OI2026-10-16: 404 OI2026-10-21: 419 OI2026-10-23: 1,286 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, 2026Viewing1,286+867
Oct 21, 2026419+15
Oct 16, 2026404+17
Oct 15, 2026387-2
Oct 14, 20263890
Oct 13, 2026389-3
Oct 09, 2026392No prior observation