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Contract OI history

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Jan 21, 2028 EXPIRATION

CSCO $100.00 Put

CSCO280121P00100000

Latest saved OI5,061Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $100.00 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. 5,0612,5300 2026-10-09: 3,119 OI2026-10-13: 3,119 OI2026-10-14: 3,119 OI2026-10-15: 3,114 OI2026-10-16: 4,442 OI2026-10-21: 5,058 OI2026-10-23: 5,061 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, 2026Viewing5,061+3
Oct 21, 20265,058+616
Oct 16, 20264,442+1,328
Oct 15, 20263,114-5
Oct 14, 20263,1190
Oct 13, 20263,1190
Oct 09, 20263,119No prior observation