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Contract OI history

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Jan 15, 2027 EXPIRATION

RIO $87.50 Put

RIO270115P00087500

Latest saved OI509Oct 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 $87.50 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. 5092540 2026-10-02: 390 OI2026-10-05: 491 OI2026-10-06: 491 OI2026-10-07: 491 OI2026-10-08: 491 OI2026-10-09: 491 OI2026-10-13: 491 OI2026-10-14: 491 OI2026-10-15: 491 OI2026-10-16: 488 OI2026-10-20: 509 OI2026-10-23: 509 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, 20265090
Oct 20, 2026Viewing509+21
Oct 16, 2026488-3
Oct 15, 20264910
Oct 14, 20264910
Oct 13, 20264910
Oct 09, 20264910
Oct 08, 20264910
Oct 07, 20264910
Oct 06, 20264910
Oct 05, 2026491+101
Oct 02, 2026390No prior observation