OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

ERO $31.00 Put

ERO261120P00031000

Latest saved OI17Oct 23, 2026
Last change+12vs previous saved observation
Saved market days3Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
ERO $31.00 put open interest history 3 saved observations from 2026-10-16 to 2026-10-23. Exact values and changes are listed in the table below. 1780 2026-10-16: 0 OI2026-10-20: 5 OI2026-10-23: 17 OI Oct 16, 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, 2026Viewing17+12
Oct 20, 20265+5
Oct 16, 20260No prior observation