OITracker Cboe delayed data

Contract OI history

Back to MSFT

Nov 20, 2026 EXPIRATION

MSFT $405.00 Put

MSFT261120P00405000

Latest saved OI1,913Oct 23, 2026
Last change+189vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $405.00 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. 1,9139560 2026-10-09: 1,398 OI2026-10-13: 1,401 OI2026-10-14: 1,401 OI2026-10-15: 1,449 OI2026-10-16: 1,444 OI2026-10-21: 1,724 OI2026-10-23: 1,913 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, 2026Viewing1,913+189
Oct 21, 20261,724+280
Oct 16, 20261,444-5
Oct 15, 20261,449+48
Oct 14, 20261,4010
Oct 13, 20261,401+3
Oct 09, 20261,398No prior observation