OITracker Cboe delayed data

Contract OI history

Back to ERO

Dec 18, 2026 EXPIRATION

ERO $35.00 Put

ERO261218P00035000

Latest saved OI475Oct 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 $35.00 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. 4752370 2026-10-02: 179 OI2026-10-05: 179 OI2026-10-06: 184 OI2026-10-07: 183 OI2026-10-08: 189 OI2026-10-09: 191 OI2026-10-13: 184 OI2026-10-14: 463 OI2026-10-16: 473 OI2026-10-20: 475 OI2026-10-23: 475 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, 2026Viewing4750
Oct 20, 2026475+2
Oct 16, 2026473+10
Oct 14, 2026463+279
Oct 13, 2026184-7
Oct 09, 2026191+2
Oct 08, 2026189+6
Oct 07, 2026183-1
Oct 06, 2026184+5
Oct 05, 20261790
Oct 02, 2026179No prior observation