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Contract OI history

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Dec 18, 2026 EXPIRATION

RIO $100.00 Call

RIO261218C00100000

Latest saved OI2,035Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $100.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2,0351,0170 2026-10-02: 1,909 OI2026-10-05: 1,883 OI2026-10-06: 1,883 OI2026-10-07: 1,883 OI2026-10-08: 1,878 OI2026-10-09: 1,878 OI2026-10-13: 1,883 OI2026-10-14: 1,883 OI2026-10-15: 1,883 OI2026-10-16: 1,872 OI2026-10-20: 2,030 OI2026-10-23: 2,035 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, 20262,035+5
Oct 20, 2026Viewing2,030+158
Oct 16, 20261,872-11
Oct 15, 20261,8830
Oct 14, 20261,8830
Oct 13, 20261,883+5
Oct 09, 20261,8780
Oct 08, 20261,878-5
Oct 07, 20261,8830
Oct 06, 20261,8830
Oct 05, 20261,883-26
Oct 02, 20261,909No prior observation