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Contract OI history

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Oct 23, 2026 EXPIRATION

CI $287.50 Put

CI261023P00287500

Latest saved OI137Oct 23, 2026
Last change+10vs previous saved observation
Saved market days11Oct 05, 2026 onwards
Daily open interest Hover a point for its date and OI
CI $287.50 put open interest history 11 saved observations from 2026-10-05 to 2026-10-23. Exact values and changes are listed in the table below. 137680 2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 0 OI2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 90 OI2026-10-16: 91 OI2026-10-21: 127 OI2026-10-23: 137 OI Oct 05, 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, 2026Viewing137+10
Oct 21, 2026127+36
Oct 16, 202691+1
Oct 15, 202690+90
Oct 14, 202600
Oct 13, 202600
Oct 09, 202600
Oct 08, 202600
Oct 07, 202600
Oct 06, 202600
Oct 05, 20260No prior observation