STR Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-08-18
STR dark pool volume for the week of 2025-08-18: 448.0K shares traded across 22 ATS venues with a total notional value of $8.1M. Volume is down 58.5% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, BNPP CORTEX ATS.
Dark pool activity in STR 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 STR.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-08-18 | 448.0K | — | -58.5% |
| 2025-08-11 | 1.1M | — | -24.1% |
| 2025-08-04 | 1.4M | — | +96.3% |
| 2025-07-28 | 725.2K | — | +35.8% |
| 2025-07-21 | 534.0K | — | -30.6% |
| 2025-07-14 | 769.2K | — | -40.6% |
| 2025-07-07 | 1.3M | — | -1.0% |
| 2025-06-30 | 1.3M | — | +82.4% |
| 2025-06-23 | 717.3K | — | -14.5% |
| 2025-06-16 | 838.7K | — | -56.7% |
| 2025-06-09 | 1.9M | — | -56.2% |
| 2025-06-02 | 4.4M | — | +594.6% |