OITracker Cboe delayed data

Contract OI history

Back to MSFT

Oct 30, 2026 EXPIRATION

MSFT $507.50 Put

MSFT261030P00507500

Latest saved OI81Oct 23, 2026
Last change+69vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $507.50 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 81400 2026-10-21: 12 OI2026-10-23: 81 OI Oct 21, 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, 2026Viewing81+69
Oct 21, 202612No prior observation