OITracker Cboe delayed data

Contract OI history

Back to MSFT

Nov 20, 2026 EXPIRATION

MSFT $340.00 Put

MSFT261120P00340000

Latest saved OI1,232Oct 23, 2026
Last change+119vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $340.00 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. 1,2326160 2026-10-09: 1,106 OI2026-10-13: 1,105 OI2026-10-14: 1,105 OI2026-10-15: 1,107 OI2026-10-16: 1,108 OI2026-10-21: 1,113 OI2026-10-23: 1,232 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, 2026Viewing1,232+119
Oct 21, 20261,113+5
Oct 16, 20261,108+1
Oct 15, 20261,107+2
Oct 14, 20261,1050
Oct 13, 20261,105-1
Oct 09, 20261,106No prior observation