OITracker Cboe delayed data

Contract OI history

Back to MSFT

Nov 20, 2026 EXPIRATION

MSFT $425.00 Put

MSFT261120P00425000

Latest saved OI1,370Oct 23, 2026
Last change+20vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $425.00 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. 1,3706850 2026-10-09: 1,230 OI2026-10-13: 1,200 OI2026-10-14: 1,200 OI2026-10-15: 1,188 OI2026-10-16: 1,313 OI2026-10-21: 1,350 OI2026-10-23: 1,370 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, 2026Viewing1,370+20
Oct 21, 20261,350+37
Oct 16, 20261,313+125
Oct 15, 20261,188-12
Oct 14, 20261,2000
Oct 13, 20261,200-30
Oct 09, 20261,230No prior observation