OITracker Cboe delayed data

Contract OI history

Back to MSFT

Oct 23, 2026 EXPIRATION

MSFT $440.00 Put

MSFT261023P00440000

Latest saved OI832Oct 23, 2026
Last change+32vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $440.00 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. 8324160 2026-10-09: 376 OI2026-10-13: 373 OI2026-10-14: 373 OI2026-10-15: 372 OI2026-10-16: 495 OI2026-10-21: 800 OI2026-10-23: 832 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, 2026Viewing832+32
Oct 21, 2026800+305
Oct 16, 2026495+123
Oct 15, 2026372-1
Oct 14, 20263730
Oct 13, 2026373-3
Oct 09, 2026376No prior observation