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Contract OI history

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Dec 18, 2026 EXPIRATION

RIO $75.00 Put

RIO261218P00075000

Latest saved OI656Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
RIO $75.00 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. 6563280 2026-10-02: 654 OI2026-10-05: 654 OI2026-10-06: 654 OI2026-10-07: 652 OI2026-10-08: 652 OI2026-10-09: 652 OI2026-10-13: 653 OI2026-10-14: 653 OI2026-10-15: 654 OI2026-10-16: 654 OI2026-10-20: 654 OI2026-10-23: 656 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, 2026656+2
Oct 20, 2026Viewing6540
Oct 16, 20266540
Oct 15, 2026654+1
Oct 14, 20266530
Oct 13, 2026653+1
Oct 09, 20266520
Oct 08, 20266520
Oct 07, 2026652-2
Oct 06, 20266540
Oct 05, 20266540
Oct 02, 2026654No prior observation