OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

ERO $40.00 Put

ERO270115P00040000

Latest saved OI266Oct 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 $40.00 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. 2661330 2026-10-02: 188 OI2026-10-05: 188 OI2026-10-06: 188 OI2026-10-07: 189 OI2026-10-08: 189 OI2026-10-09: 189 OI2026-10-13: 194 OI2026-10-14: 266 OI2026-10-16: 266 OI2026-10-20: 266 OI2026-10-23: 266 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, 2026Viewing2660
Oct 20, 20262660
Oct 16, 20262660
Oct 14, 2026266+72
Oct 13, 2026194+5
Oct 09, 20261890
Oct 08, 20261890
Oct 07, 2026189+1
Oct 06, 20261880
Oct 05, 20261880
Oct 02, 2026188No prior observation