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Contract OI history

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Mar 19, 2027 EXPIRATION

CMCSA $20.00 Put

CMCSA270319P00020000

Latest saved OI930Oct 23, 2026
Last change+55vs 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. 9304650 2026-10-09: 778 OI2026-10-13: 784 OI2026-10-14: 784 OI2026-10-15: 797 OI2026-10-16: 797 OI2026-10-21: 875 OI2026-10-23: 930 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, 2026Viewing930+55
Oct 21, 2026875+78
Oct 16, 20267970
Oct 15, 2026797+13
Oct 14, 20267840
Oct 13, 2026784+6
Oct 09, 2026778No prior observation