USB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
USB dark pool volume for the week of 2026-07-20: 10.1M shares traded across 28 ATS venues with a total notional value of $640.3M. Volume is down 7.2% week-over-week. Off-exchange dark pool transactions account for 28.0% of total USB market volume — elevated above the typical 10–14% institutional baseline, potentially signaling active accumulation or distribution. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in USB 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 USB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 10.1M | 28.0% | -7.2% |
| 2026-07-13 | 10.9M | 30.2% | +64.7% |
| 2026-07-06 | 6.6M | — | +8.3% |
| 2026-06-29 | 6.1M | — | -35.1% |
| 2026-06-22 | 9.4M | — | +14.8% |
| 2026-06-15 | 8.2M | — | -4.8% |
| 2026-06-08 | 8.6M | — | +16.8% |
| 2026-06-01 | 7.4M | 21.3% | +47.3% |
| 2026-05-25 | 5.0M | — | -17.2% |
| 2026-05-18 | 6.0M | — | -33.9% |
| 2026-05-11 | 9.1M | 26.4% | +9.2% |
| 2026-05-04 | 8.4M | 24.2% | -3.7% |