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Contract OI history

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Jan 15, 2027 EXPIRATION

CI $270.00 Put

CI270115P00270000

Latest saved OI663Oct 23, 2026
Last change-53vs 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. 7393690 2026-10-02: 739 OI2026-10-05: 736 OI2026-10-06: 736 OI2026-10-07: 736 OI2026-10-08: 736 OI2026-10-09: 736 OI2026-10-13: 735 OI2026-10-14: 735 OI2026-10-15: 732 OI2026-10-16: 716 OI2026-10-21: 716 OI2026-10-23: 663 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, 2026Viewing663-53
Oct 21, 20267160
Oct 16, 2026716-16
Oct 15, 2026732-3
Oct 14, 20267350
Oct 13, 2026735-1
Oct 09, 20267360
Oct 08, 20267360
Oct 07, 20267360
Oct 06, 20267360
Oct 05, 2026736-3
Oct 02, 2026739No prior observation