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Contract OI history

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Mar 19, 2027 EXPIRATION

RIO $85.00 Put

RIO270319P00085000

Latest saved OI182Oct 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 $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. 182910 2026-10-02: 161 OI2026-10-05: 161 OI2026-10-06: 161 OI2026-10-07: 161 OI2026-10-08: 161 OI2026-10-09: 161 OI2026-10-13: 171 OI2026-10-14: 171 OI2026-10-15: 171 OI2026-10-16: 177 OI2026-10-20: 182 OI2026-10-23: 182 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, 20261820
Oct 20, 2026Viewing182+5
Oct 16, 2026177+6
Oct 15, 20261710
Oct 14, 20261710
Oct 13, 2026171+10
Oct 09, 20261610
Oct 08, 20261610
Oct 07, 20261610
Oct 06, 20261610
Oct 05, 20261610
Oct 02, 2026161No prior observation