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Contract OI history

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Dec 17, 2027 EXPIRATION

CSCO $37.50 Put

CSCO271217P00037500

Latest saved OI243Oct 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 $37.50 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. 2431210 2026-10-09: 242 OI2026-10-13: 242 OI2026-10-14: 242 OI2026-10-15: 242 OI2026-10-16: 243 OI2026-10-21: 243 OI2026-10-23: 243 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, 2026Viewing2430
Oct 21, 20262430
Oct 16, 2026243+1
Oct 15, 20262420
Oct 14, 20262420
Oct 13, 20262420
Oct 09, 2026242No prior observation