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Contract OI history

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Nov 20, 2026 EXPIRATION

CMCSA $21.00 Call

CMCSA261120C00021000

Latest saved OI1,821Oct 23, 2026
Last change+235vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $21.00 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. 1,8219100 2026-10-09: 791 OI2026-10-13: 1,274 OI2026-10-14: 1,274 OI2026-10-15: 1,597 OI2026-10-16: 1,584 OI2026-10-21: 1,586 OI2026-10-23: 1,821 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, 2026Viewing1,821+235
Oct 21, 20261,586+2
Oct 16, 20261,584-13
Oct 15, 20261,597+323
Oct 14, 20261,2740
Oct 13, 20261,274+483
Oct 09, 2026791No prior observation