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Contract OI history

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Dec 18, 2026 EXPIRATION

RTO $20.00 Put

RTO261218P00020000

Latest saved OI6Oct 23, 2026
Last change0vs previous saved observation
Saved market days4Oct 14, 2026 onwards
Daily open interest Hover a point for its date and OI
RTO $20.00 put open interest history 4 saved observations from 2026-10-14 to 2026-10-23. Exact values and changes are listed in the table below. 630 2026-10-14: 0 OI2026-10-16: 6 OI2026-10-20: 6 OI2026-10-23: 6 OI Oct 14, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

RTO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing60
Oct 20, 202660
Oct 16, 20266+6
Oct 14, 20260No prior observation