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Contract OI history

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Jan 21, 2028 EXPIRATION

CSCO $40.00 Call

CSCO280121C00040000

Latest saved OI337Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $40.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3381690 2026-10-09: 338 OI2026-10-13: 337 OI2026-10-14: 337 OI2026-10-15: 337 OI2026-10-16: 337 OI2026-10-21: 337 OI2026-10-23: 337 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, 2026Viewing3370
Oct 21, 20263370
Oct 16, 20263370
Oct 15, 20263370
Oct 14, 20263370
Oct 13, 2026337-1
Oct 09, 2026338No prior observation