OITracker Cboe delayed data

Contract OI history

Back to MSFT

Dec 18, 2026 EXPIRATION

MSFT $370.00 Put

MSFT261218P00370000

Latest saved OI3,807Oct 23, 2026
Last change-11vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $370.00 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. 3,8181,9090 2026-10-09: 3,770 OI2026-10-13: 3,764 OI2026-10-14: 3,764 OI2026-10-15: 3,761 OI2026-10-16: 3,759 OI2026-10-21: 3,818 OI2026-10-23: 3,807 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, 2026Viewing3,807-11
Oct 21, 20263,818+59
Oct 16, 20263,759-2
Oct 15, 20263,761-3
Oct 14, 20263,7640
Oct 13, 20263,764-6
Oct 09, 20263,770No prior observation