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Contract OI history

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Oct 23, 2026 EXPIRATION

CMCSA $21.00 Put

CMCSA261023P00021000

Latest saved OI5,805Oct 23, 2026
Last change+678vs 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. 5,8052,9020 2026-10-09: 834 OI2026-10-13: 917 OI2026-10-14: 917 OI2026-10-15: 922 OI2026-10-16: 947 OI2026-10-21: 5,127 OI2026-10-23: 5,805 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, 2026Viewing5,805+678
Oct 21, 20265,127+4,180
Oct 16, 2026947+25
Oct 15, 2026922+5
Oct 14, 20269170
Oct 13, 2026917+83
Oct 09, 2026834No prior observation