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Contract OI history

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Mar 19, 2027 EXPIRATION

CSCO $50.00 Put

CSCO270319P00050000

Latest saved OI1,376Oct 23, 2026
Last change-19vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CSCO $50.00 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. 1,3956970 2026-10-09: 1,341 OI2026-10-13: 1,341 OI2026-10-14: 1,341 OI2026-10-15: 1,341 OI2026-10-16: 1,341 OI2026-10-21: 1,395 OI2026-10-23: 1,376 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, 2026Viewing1,376-19
Oct 21, 20261,395+54
Oct 16, 20261,3410
Oct 15, 20261,3410
Oct 14, 20261,3410
Oct 13, 20261,3410
Oct 09, 20261,341No prior observation