USM Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-08-11
USM dark pool volume for the week of 2025-08-11: 878.0K shares traded across 24 ATS venues with a total notional value of $66.7M. Volume is up 2.9% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in USM 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 USM.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-08-11 | 878.0K | — | +2.9% |
| 2025-08-04 | 853.0K | — | +24.1% |
| 2025-07-28 | 687.1K | — | -0.9% |
| 2025-07-21 | 693.6K | — | +70.3% |
| 2025-07-14 | 407.4K | — | -33.0% |
| 2025-07-07 | 608.0K | — | +207.9% |
| 2025-06-30 | 197.5K | — | -15.1% |
| 2025-06-23 | 232.4K | — | +49.1% |
| 2025-06-16 | 155.9K | — | -24.6% |
| 2025-06-09 | 206.7K | — | +15.7% |
| 2025-06-02 | 178.6K | — | -1.0% |
| 2025-05-26 | 180.3K | — | -21.2% |