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Contract OI history

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Dec 18, 2026 EXPIRATION

CI $270.00 Put

CI261218P00270000

Latest saved OI782Oct 23, 2026
Last change+5vs 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. 8184090 2026-10-02: 480 OI2026-10-05: 482 OI2026-10-06: 482 OI2026-10-07: 483 OI2026-10-08: 486 OI2026-10-09: 486 OI2026-10-13: 486 OI2026-10-14: 818 OI2026-10-15: 818 OI2026-10-16: 816 OI2026-10-21: 777 OI2026-10-23: 782 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, 2026Viewing782+5
Oct 21, 2026777-39
Oct 16, 2026816-2
Oct 15, 20268180
Oct 14, 2026818+332
Oct 13, 20264860
Oct 09, 20264860
Oct 08, 2026486+3
Oct 07, 2026483+1
Oct 06, 20264820
Oct 05, 2026482+2
Oct 02, 2026480No prior observation