OITracker Cboe delayed data

Contract OI history

Back to RIO

Mar 19, 2027 EXPIRATION

RIO $87.50 Put

RIO270319P00087500

Latest saved OI129Oct 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 $87.50 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. 129640 2026-10-02: 75 OI2026-10-05: 75 OI2026-10-06: 75 OI2026-10-07: 75 OI2026-10-08: 75 OI2026-10-09: 75 OI2026-10-13: 91 OI2026-10-14: 91 OI2026-10-15: 91 OI2026-10-16: 94 OI2026-10-20: 129 OI2026-10-23: 129 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, 20261290
Oct 20, 2026Viewing129+35
Oct 16, 202694+3
Oct 15, 2026910
Oct 14, 2026910
Oct 13, 202691+16
Oct 09, 2026750
Oct 08, 2026750
Oct 07, 2026750
Oct 06, 2026750
Oct 05, 2026750
Oct 02, 202675No prior observation