OITracker Cboe delayed data

Contract OI history

Back to CMCSA

Dec 15, 2028 EXPIRATION

CMCSA $20.00 Put

CMCSA281215P00020000

Latest saved OI867Oct 23, 2026
Last change+254vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $20.00 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. 8674330 2026-10-09: 618 OI2026-10-13: 618 OI2026-10-14: 618 OI2026-10-15: 618 OI2026-10-16: 613 OI2026-10-21: 613 OI2026-10-23: 867 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CMCSA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing867+254
Oct 21, 20266130
Oct 16, 2026613-5
Oct 15, 20266180
Oct 14, 20266180
Oct 13, 20266180
Oct 09, 2026618No prior observation