OITracker Cboe delayed data

Contract OI history

Back to MSFT

Dec 18, 2026 EXPIRATION

MSFT $555.00 Call

MSFT261218C00555000

Latest saved OI2,540Oct 23, 2026
Last change+17vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $555.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2,7911,3950 2026-10-09: 2,791 OI2026-10-13: 2,433 OI2026-10-14: 2,433 OI2026-10-15: 2,463 OI2026-10-16: 2,507 OI2026-10-21: 2,523 OI2026-10-23: 2,540 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, 2026Viewing2,540+17
Oct 21, 20262,523+16
Oct 16, 20262,507+44
Oct 15, 20262,463+30
Oct 14, 20262,4330
Oct 13, 20262,433-358
Oct 09, 20262,791No prior observation