OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

ERO $25.00 Put

ERO280121P00025000

Latest saved OI71Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ERO $25.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 71350 2026-10-02: 60 OI2026-10-05: 60 OI2026-10-06: 60 OI2026-10-07: 70 OI2026-10-08: 70 OI2026-10-09: 70 OI2026-10-13: 70 OI2026-10-14: 71 OI2026-10-16: 71 OI2026-10-20: 71 OI2026-10-23: 71 OI Oct 02, 2026Oct 23, 2026

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

ERO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing710
Oct 20, 2026710
Oct 16, 2026710
Oct 14, 202671+1
Oct 13, 2026700
Oct 09, 2026700
Oct 08, 2026700
Oct 07, 202670+10
Oct 06, 2026600
Oct 05, 2026600
Oct 02, 202660No prior observation