OITracker Cboe delayed data

Contract OI history

Back to MSFT

Oct 30, 2026 EXPIRATION

MSFT $640.00 Call

MSFT261030C00640000

Latest saved OI546Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $640.00 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. 1,5127560 2026-10-09: 1,502 OI2026-10-13: 1,500 OI2026-10-14: 1,500 OI2026-10-15: 1,500 OI2026-10-16: 1,512 OI2026-10-21: 544 OI2026-10-23: 546 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, 2026Viewing546+2
Oct 21, 2026544-968
Oct 16, 20261,512+12
Oct 15, 20261,5000
Oct 14, 20261,5000
Oct 13, 20261,500-2
Oct 09, 20261,502No prior observation