OITracker Cboe delayed data

Contract OI history

Back to MSFT

Sep 17, 2027 EXPIRATION

MSFT $525.00 Put

MSFT270917P00525000

Latest saved OI203Oct 23, 2026
Last change+7vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $525.00 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. 2031010 2026-10-09: 102 OI2026-10-13: 154 OI2026-10-14: 154 OI2026-10-15: 154 OI2026-10-16: 153 OI2026-10-21: 196 OI2026-10-23: 203 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, 2026Viewing203+7
Oct 21, 2026196+43
Oct 16, 2026153-1
Oct 15, 20261540
Oct 14, 20261540
Oct 13, 2026154+52
Oct 09, 2026102No prior observation