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Contract OI history

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Jan 21, 2028 EXPIRATION

CMCSA $17.50 Put

CMCSA280121P00017500

Latest saved OI1,675Oct 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 $17.50 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. 1,6858420 2026-10-09: 1,631 OI2026-10-13: 1,685 OI2026-10-14: 1,685 OI2026-10-15: 1,685 OI2026-10-16: 1,685 OI2026-10-21: 1,675 OI2026-10-23: 1,675 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, 2026Viewing1,6750
Oct 21, 20261,675-10
Oct 16, 20261,6850
Oct 15, 20261,6850
Oct 14, 20261,6850
Oct 13, 20261,685+54
Oct 09, 20261,631No prior observation