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Contract OI history

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Dec 18, 2026 EXPIRATION

CI $280.00 Put

CI261218P00280000

Latest saved OI1,025Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $280.00 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. 1,0275130 2026-10-02: 139 OI2026-10-05: 139 OI2026-10-06: 139 OI2026-10-07: 139 OI2026-10-08: 142 OI2026-10-09: 143 OI2026-10-13: 144 OI2026-10-14: 1,022 OI2026-10-15: 1,024 OI2026-10-16: 1,024 OI2026-10-21: 1,027 OI2026-10-23: 1,025 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, 2026Viewing1,025-2
Oct 21, 20261,027+3
Oct 16, 20261,0240
Oct 15, 20261,024+2
Oct 14, 20261,022+878
Oct 13, 2026144+1
Oct 09, 2026143+1
Oct 08, 2026142+3
Oct 07, 20261390
Oct 06, 20261390
Oct 05, 20261390
Oct 02, 2026139No prior observation