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Contract OI history

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Nov 20, 2026 EXPIRATION

CSCO $80.00 Put

CSCO261120P00080000

Latest saved OI5,040Oct 23, 2026
Last change+101vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $80.00 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. 5,0402,5200 2026-10-09: 4,324 OI2026-10-13: 4,350 OI2026-10-14: 4,350 OI2026-10-15: 4,350 OI2026-10-16: 4,352 OI2026-10-21: 4,939 OI2026-10-23: 5,040 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CSCO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,040+101
Oct 21, 20264,939+587
Oct 16, 20264,352+2
Oct 15, 20264,3500
Oct 14, 20264,3500
Oct 13, 20264,350+26
Oct 09, 20264,324No prior observation