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Contract OI history

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Dec 18, 2026 EXPIRATION

RIO $85.00 Put

RIO261218P00085000

Latest saved OI4,589Oct 23, 2026
Last change+9vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $85.00 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. 4,5892,2940 2026-10-02: 2,067 OI2026-10-05: 3,152 OI2026-10-06: 3,152 OI2026-10-07: 3,152 OI2026-10-08: 3,152 OI2026-10-09: 3,152 OI2026-10-13: 3,671 OI2026-10-14: 3,671 OI2026-10-15: 3,671 OI2026-10-16: 3,671 OI2026-10-20: 4,580 OI2026-10-23: 4,589 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, 20264,589+9
Oct 20, 2026Viewing4,580+909
Oct 16, 20263,6710
Oct 15, 20263,6710
Oct 14, 20263,6710
Oct 13, 20263,671+519
Oct 09, 20263,1520
Oct 08, 20263,1520
Oct 07, 20263,1520
Oct 06, 20263,1520
Oct 05, 20263,152+1,085
Oct 02, 20262,067No prior observation