OITracker Cboe delayed data

Contract OI history

Back to MSFT

Dec 18, 2026 EXPIRATION

MSFT $545.00 Put

MSFT261218P00545000

Latest saved OI510Oct 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 $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. 5102550 2026-10-09: 197 OI2026-10-13: 442 OI2026-10-14: 442 OI2026-10-15: 453 OI2026-10-16: 446 OI2026-10-21: 503 OI2026-10-23: 510 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, 2026Viewing510+7
Oct 21, 2026503+57
Oct 16, 2026446-7
Oct 15, 2026453+11
Oct 14, 20264420
Oct 13, 2026442+245
Oct 09, 2026197No prior observation