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Contract OI history

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Jan 21, 2028 EXPIRATION

CI $270.00 Put

CI280121P00270000

Latest saved OI413Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $270.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4132060 2026-10-02: 409 OI2026-10-05: 409 OI2026-10-06: 409 OI2026-10-07: 413 OI2026-10-08: 413 OI2026-10-09: 413 OI2026-10-13: 413 OI2026-10-14: 413 OI2026-10-15: 413 OI2026-10-16: 413 OI2026-10-21: 413 OI2026-10-23: 413 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4130
Oct 21, 20264130
Oct 16, 20264130
Oct 15, 20264130
Oct 14, 20264130
Oct 13, 20264130
Oct 09, 20264130
Oct 08, 20264130
Oct 07, 2026413+4
Oct 06, 20264090
Oct 05, 20264090
Oct 02, 2026409No prior observation