OITracker Cboe delayed data

Contract OI history

Back to MSFT

Dec 18, 2026 EXPIRATION

MSFT $325.00 Put

MSFT261218P00325000

Latest saved OI1,712Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $325.00 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. 1,7128560 2026-10-09: 1,708 OI2026-10-13: 1,707 OI2026-10-14: 1,707 OI2026-10-15: 1,707 OI2026-10-16: 1,707 OI2026-10-21: 1,710 OI2026-10-23: 1,712 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, 2026Viewing1,712+2
Oct 21, 20261,710+3
Oct 16, 20261,7070
Oct 15, 20261,7070
Oct 14, 20261,7070
Oct 13, 20261,707-1
Oct 09, 20261,708No prior observation