RIO Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
RIO dark pool volume for the week of 2026-07-06: 3.1M shares traded across 29 ATS venues with a total notional value of $281.4M. Volume is up 74.4% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in RIO reflects institutional order flow executing on Alternative Trading Systems (ATS) registered with the SEC — private venues where large-block trades are matched away from public exchanges to minimize price impact. StonkWhisper ingests FINRA-published ATS volume data to track these off-exchange flows. Sustained elevation in dark pool percentage — particularly when concentrated at specific venues — can indicate institutional accumulation or distribution ahead of significant price moves. The interactive charts below show 12-week historical volume and complete venue breakdown for RIO.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 3.1M | — | +74.4% |
| 2026-06-29 | 1.8M | — | -37.1% |
| 2026-06-22 | 2.8M | — | +18.7% |
| 2026-06-15 | 2.4M | — | -24.1% |
| 2026-06-08 | 3.2M | — | -1.2% |
| 2026-06-01 | 3.2M | — | +25.5% |
| 2026-05-25 | 2.5M | — | +25.1% |
| 2026-05-18 | 2.0M | — | -20.7% |
| 2026-05-11 | 2.6M | — | -1.4% |
| 2026-05-04 | 2.6M | — | +21.4% |
| 2026-04-27 | 2.1M | — | — |
| 2026-03-23 | 2.9M | — | -20.2% |