OITracker Cboe delayed data

Contract OI history

Back to RIO

Jan 15, 2027 EXPIRATION

RIO $32.50 Put

RIO270115P00032500

Latest saved OI342Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $32.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3421710 2026-10-02: 342 OI2026-10-05: 342 OI2026-10-06: 342 OI2026-10-07: 342 OI2026-10-08: 342 OI2026-10-09: 342 OI2026-10-13: 342 OI2026-10-14: 342 OI2026-10-15: 342 OI2026-10-16: 342 OI2026-10-20: 342 OI2026-10-23: 342 OI Oct 02, 2026Oct 23, 2026

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

RIO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20263420
Oct 20, 2026Viewing3420
Oct 16, 20263420
Oct 15, 20263420
Oct 14, 20263420
Oct 13, 20263420
Oct 09, 20263420
Oct 08, 20263420
Oct 07, 20263420
Oct 06, 20263420
Oct 05, 20263420
Oct 02, 2026342No prior observation