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Contract OI history

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Oct 23, 2026 EXPIRATION

CMCSA $20.50 Put

CMCSA261023P00020500

Latest saved OI1,402Oct 23, 2026
Last change+502vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $20.50 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. 1,4027010 2026-10-09: 106 OI2026-10-13: 167 OI2026-10-14: 167 OI2026-10-15: 177 OI2026-10-16: 181 OI2026-10-21: 900 OI2026-10-23: 1,402 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, 2026Viewing1,402+502
Oct 21, 2026900+719
Oct 16, 2026181+4
Oct 15, 2026177+10
Oct 14, 20261670
Oct 13, 2026167+61
Oct 09, 2026106No prior observation