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Contract OI history

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Nov 06, 2026 EXPIRATION

CMCSA $21.00 Put

CMCSA261106P00021000

Latest saved OI123Oct 23, 2026
Last change-27vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $21.00 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. 150750 2026-10-09: 115 OI2026-10-13: 130 OI2026-10-14: 130 OI2026-10-15: 131 OI2026-10-16: 124 OI2026-10-21: 150 OI2026-10-23: 123 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, 2026Viewing123-27
Oct 21, 2026150+26
Oct 16, 2026124-7
Oct 15, 2026131+1
Oct 14, 20261300
Oct 13, 2026130+15
Oct 09, 2026115No prior observation