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Contract OI history

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Jan 19, 2029 EXPIRATION

CMCSA $20.00 Put

CMCSA290119P00020000

Latest saved OI699Oct 23, 2026
Last change+30vs 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. 6993490 2026-10-09: 624 OI2026-10-13: 630 OI2026-10-14: 630 OI2026-10-15: 630 OI2026-10-16: 671 OI2026-10-21: 669 OI2026-10-23: 699 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, 2026Viewing699+30
Oct 21, 2026669-2
Oct 16, 2026671+41
Oct 15, 20266300
Oct 14, 20266300
Oct 13, 2026630+6
Oct 09, 2026624No prior observation