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Contract OI history

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Dec 18, 2026 EXPIRATION

CSCO $90.00 Put

CSCO261218P00090000

Latest saved OI2,452Oct 23, 2026
Last change+158vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $90.00 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. 2,4521,2260 2026-10-09: 2,202 OI2026-10-13: 2,196 OI2026-10-14: 2,196 OI2026-10-15: 2,202 OI2026-10-16: 2,256 OI2026-10-21: 2,294 OI2026-10-23: 2,452 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, 2026Viewing2,452+158
Oct 21, 20262,294+38
Oct 16, 20262,256+54
Oct 15, 20262,202+6
Oct 14, 20262,1960
Oct 13, 20262,196-6
Oct 09, 20262,202No prior observation