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Contract OI history

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Dec 18, 2026 EXPIRATION

RIO $100.00 Put

RIO261218P00100000

Latest saved OI794Oct 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 $100.00 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. 7973980 2026-10-02: 797 OI2026-10-05: 797 OI2026-10-06: 797 OI2026-10-07: 797 OI2026-10-08: 793 OI2026-10-09: 794 OI2026-10-13: 796 OI2026-10-14: 796 OI2026-10-15: 796 OI2026-10-16: 794 OI2026-10-20: 794 OI2026-10-23: 794 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, 20267940
Oct 20, 2026Viewing7940
Oct 16, 2026794-2
Oct 15, 20267960
Oct 14, 20267960
Oct 13, 2026796+2
Oct 09, 2026794+1
Oct 08, 2026793-4
Oct 07, 20267970
Oct 06, 20267970
Oct 05, 20267970
Oct 02, 2026797No prior observation