OITracker Cboe delayed data

Contract OI history

Back to CSCO

Jan 19, 2029 EXPIRATION

CSCO $55.00 Put

CSCO290119P00055000

Latest saved OI23Oct 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 $55.00 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. 23110 2026-10-09: 2 OI2026-10-13: 20 OI2026-10-14: 20 OI2026-10-15: 20 OI2026-10-16: 20 OI2026-10-21: 22 OI2026-10-23: 23 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, 2026Viewing23+1
Oct 21, 202622+2
Oct 16, 2026200
Oct 15, 2026200
Oct 14, 2026200
Oct 13, 202620+18
Oct 09, 20262No prior observation