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Contract OI history

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Dec 18, 2026 EXPIRATION

CSCO $80.00 Put

CSCO261218P00080000

Latest saved OI9,991Oct 23, 2026
Last change+1vs 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. 9,9914,9950 2026-10-09: 8,721 OI2026-10-13: 8,721 OI2026-10-14: 8,721 OI2026-10-15: 8,721 OI2026-10-16: 8,721 OI2026-10-21: 9,990 OI2026-10-23: 9,991 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, 2026Viewing9,991+1
Oct 21, 20269,990+1,269
Oct 16, 20268,7210
Oct 15, 20268,7210
Oct 14, 20268,7210
Oct 13, 20268,7210
Oct 09, 20268,721No prior observation