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Contract OI history

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Dec 18, 2026 EXPIRATION

RIO $65.00 Put

RIO261218P00065000

Latest saved OI119Oct 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 $65.00 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. 119590 2026-10-02: 116 OI2026-10-05: 116 OI2026-10-06: 116 OI2026-10-07: 116 OI2026-10-08: 116 OI2026-10-09: 116 OI2026-10-13: 115 OI2026-10-14: 115 OI2026-10-15: 115 OI2026-10-16: 115 OI2026-10-20: 119 OI2026-10-23: 119 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, 20261190
Oct 20, 2026Viewing119+4
Oct 16, 20261150
Oct 15, 20261150
Oct 14, 20261150
Oct 13, 2026115-1
Oct 09, 20261160
Oct 08, 20261160
Oct 07, 20261160
Oct 06, 20261160
Oct 05, 20261160
Oct 02, 2026116No prior observation