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Contract OI history

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Jan 15, 2027 EXPIRATION

RIO $72.50 Put

RIO270115P00072500

Latest saved OI158Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $72.50 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. 158790 2026-10-02: 142 OI2026-10-05: 142 OI2026-10-06: 142 OI2026-10-07: 142 OI2026-10-08: 145 OI2026-10-09: 157 OI2026-10-13: 157 OI2026-10-14: 157 OI2026-10-15: 157 OI2026-10-16: 157 OI2026-10-20: 157 OI2026-10-23: 158 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, 2026158+1
Oct 20, 2026Viewing1570
Oct 16, 20261570
Oct 15, 20261570
Oct 14, 20261570
Oct 13, 20261570
Oct 09, 2026157+12
Oct 08, 2026145+3
Oct 07, 20261420
Oct 06, 20261420
Oct 05, 20261420
Oct 02, 2026142No prior observation