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Contract OI history

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Dec 15, 2028 EXPIRATION

CMCSA $18.00 Put

CMCSA281215P00018000

Latest saved OI660Oct 23, 2026
Last change-20vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $18.00 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. 6803400 2026-10-09: 680 OI2026-10-13: 680 OI2026-10-14: 680 OI2026-10-15: 680 OI2026-10-16: 680 OI2026-10-21: 680 OI2026-10-23: 660 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, 2026Viewing660-20
Oct 21, 20266800
Oct 16, 20266800
Oct 15, 20266800
Oct 14, 20266800
Oct 13, 20266800
Oct 09, 2026680No prior observation