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Contract OI history

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Dec 18, 2026 EXPIRATION

CSCO $85.00 Put

CSCO261218P00085000

Latest saved OI3,308Oct 23, 2026
Last change+6vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $85.00 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. 3,3081,6540 2026-10-09: 3,266 OI2026-10-13: 3,266 OI2026-10-14: 3,266 OI2026-10-15: 3,265 OI2026-10-16: 3,293 OI2026-10-21: 3,302 OI2026-10-23: 3,308 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, 2026Viewing3,308+6
Oct 21, 20263,302+9
Oct 16, 20263,293+28
Oct 15, 20263,265-1
Oct 14, 20263,2660
Oct 13, 20263,2660
Oct 09, 20263,266No prior observation