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Contract OI history

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Dec 18, 2026 EXPIRATION

CMCSA $20.00 Put

CMCSA261218P00020000

Latest saved OI2,440Oct 23, 2026
Last change-13vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $20.00 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. 2,4531,2260 2026-10-09: 2,250 OI2026-10-13: 2,297 OI2026-10-14: 2,297 OI2026-10-15: 2,300 OI2026-10-16: 2,292 OI2026-10-21: 2,453 OI2026-10-23: 2,440 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, 2026Viewing2,440-13
Oct 21, 20262,453+161
Oct 16, 20262,292-8
Oct 15, 20262,300+3
Oct 14, 20262,2970
Oct 13, 20262,297+47
Oct 09, 20262,250No prior observation