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Contract OI history

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Sep 17, 2027 EXPIRATION

CMCSA $20.00 Call

CMCSA270917C00020000

Latest saved OI427Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $20.00 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. 4472230 2026-10-09: 443 OI2026-10-13: 447 OI2026-10-14: 447 OI2026-10-15: 447 OI2026-10-16: 447 OI2026-10-21: 427 OI2026-10-23: 427 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, 2026Viewing4270
Oct 21, 2026427-20
Oct 16, 20264470
Oct 15, 20264470
Oct 14, 20264470
Oct 13, 2026447+4
Oct 09, 2026443No prior observation