OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

MSFT $545.00 Put

MSFT261030P00545000

Latest saved OI524Oct 23, 2026
Last change-4vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $545.00 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. 5282640 2026-10-09: 36 OI2026-10-13: 435 OI2026-10-14: 435 OI2026-10-15: 411 OI2026-10-16: 477 OI2026-10-21: 528 OI2026-10-23: 524 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, 2026Viewing524-4
Oct 21, 2026528+51
Oct 16, 2026477+66
Oct 15, 2026411-24
Oct 14, 20264350
Oct 13, 2026435+399
Oct 09, 202636No prior observation