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Contract OI history

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Jan 15, 2027 EXPIRATION

CMCSA $17.50 Put

CMCSA270115P00017500

Latest saved OI1,396Oct 23, 2026
Last change-4vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CMCSA $17.50 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. 1,4007000 2026-10-09: 1,371 OI2026-10-13: 1,393 OI2026-10-14: 1,393 OI2026-10-15: 1,393 OI2026-10-16: 1,394 OI2026-10-21: 1,400 OI2026-10-23: 1,396 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, 2026Viewing1,396-4
Oct 21, 20261,400+6
Oct 16, 20261,394+1
Oct 15, 20261,3930
Oct 14, 20261,3930
Oct 13, 20261,393+22
Oct 09, 20261,371No prior observation