OITracker Cboe delayed data

Contract OI history

Back to RIO

Dec 18, 2026 EXPIRATION

RIO $90.00 Put

RIO261218P00090000

Latest saved OI1,012Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $90.00 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. 1,0285140 2026-10-02: 837 OI2026-10-05: 837 OI2026-10-06: 837 OI2026-10-07: 831 OI2026-10-08: 831 OI2026-10-09: 830 OI2026-10-13: 828 OI2026-10-14: 828 OI2026-10-15: 1,011 OI2026-10-16: 1,028 OI2026-10-20: 1,015 OI2026-10-23: 1,012 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, 20261,012-3
Oct 20, 2026Viewing1,015-13
Oct 16, 20261,028+17
Oct 15, 20261,011+183
Oct 14, 20268280
Oct 13, 2026828-2
Oct 09, 2026830-1
Oct 08, 20268310
Oct 07, 2026831-6
Oct 06, 20268370
Oct 05, 20268370
Oct 02, 2026837No prior observation