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Contract OI history

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Mar 19, 2027 EXPIRATION

CSCO $80.00 Put

CSCO270319P00080000

Latest saved OI1,603Oct 23, 2026
Last change+49vs 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. 1,6038010 2026-10-09: 1,527 OI2026-10-13: 1,527 OI2026-10-14: 1,527 OI2026-10-15: 1,553 OI2026-10-16: 1,554 OI2026-10-21: 1,554 OI2026-10-23: 1,603 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, 2026Viewing1,603+49
Oct 21, 20261,5540
Oct 16, 20261,554+1
Oct 15, 20261,553+26
Oct 14, 20261,5270
Oct 13, 20261,5270
Oct 09, 20261,527No prior observation