OITracker Cboe delayed data

Contract OI history

Back to RIO

Jan 15, 2027 EXPIRATION

RIO $47.50 Put

RIO270115P00047500

Latest saved OI525Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $47.50 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. 5252620 2026-10-02: 524 OI2026-10-05: 524 OI2026-10-06: 524 OI2026-10-07: 524 OI2026-10-08: 524 OI2026-10-09: 524 OI2026-10-13: 524 OI2026-10-14: 524 OI2026-10-15: 524 OI2026-10-16: 524 OI2026-10-20: 524 OI2026-10-23: 525 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, 2026Viewing525+1
Oct 20, 20265240
Oct 16, 20265240
Oct 15, 20265240
Oct 14, 20265240
Oct 13, 20265240
Oct 09, 20265240
Oct 08, 20265240
Oct 07, 20265240
Oct 06, 20265240
Oct 05, 20265240
Oct 02, 2026524No prior observation