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Contract OI history

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Sep 17, 2027 EXPIRATION

CMCSA $20.00 Put

CMCSA270917P00020000

Latest saved OI579Oct 23, 2026
Last change-3vs 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. 5822910 2026-10-09: 542 OI2026-10-13: 518 OI2026-10-14: 518 OI2026-10-15: 519 OI2026-10-16: 520 OI2026-10-21: 582 OI2026-10-23: 579 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, 2026Viewing579-3
Oct 21, 2026582+62
Oct 16, 2026520+1
Oct 15, 2026519+1
Oct 14, 20265180
Oct 13, 2026518-24
Oct 09, 2026542No prior observation