OITracker Cboe delayed data

Contract OI history

Back to MSFT

Jan 15, 2027 EXPIRATION

MSFT $420.00 Put

MSFT270115P00420000

Latest saved OI7,873Oct 23, 2026
Last change+111vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $420.00 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. 7,8733,9360 2026-10-09: 7,558 OI2026-10-13: 7,469 OI2026-10-14: 7,469 OI2026-10-15: 7,456 OI2026-10-16: 7,458 OI2026-10-21: 7,762 OI2026-10-23: 7,873 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, 2026Viewing7,873+111
Oct 21, 20267,762+304
Oct 16, 20267,458+2
Oct 15, 20267,456-13
Oct 14, 20267,4690
Oct 13, 20267,469-89
Oct 09, 20267,558No prior observation