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Contract OI history

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Jan 19, 2029 EXPIRATION

RIO $50.00 Put

RIO290119P00050000

Latest saved OI15Oct 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 $50.00 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. 1570 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 2 OI2026-10-09: 2 OI2026-10-13: 2 OI2026-10-14: 2 OI2026-10-15: 7 OI2026-10-16: 7 OI2026-10-20: 15 OI2026-10-23: 15 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, 2026150
Oct 20, 2026Viewing15+8
Oct 16, 202670
Oct 15, 20267+5
Oct 14, 202620
Oct 13, 202620
Oct 09, 202620
Oct 08, 20262+2
Oct 07, 202600
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation