SEI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
SEI dark pool volume for the week of 2026-07-06: 4.9M shares traded across 30 ATS venues with a total notional value of $333.8M. Volume is up 63.3% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in SEI 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 SEI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 4.9M | — | +63.3% |
| 2026-06-29 | 3.0M | — | -0.7% |
| 2026-06-22 | 3.0M | — | +10.8% |
| 2026-06-15 | 2.7M | — | -12.1% |
| 2026-06-08 | 3.1M | — | -9.9% |
| 2026-06-01 | 3.4M | — | +5.4% |
| 2026-05-25 | 3.3M | — | -10.4% |
| 2026-05-18 | 3.6M | — | +11.4% |
| 2026-05-11 | 3.3M | — | -5.4% |
| 2026-05-04 | 3.4M | — | -32.6% |
| 2026-04-27 | 5.1M | — | — |
| 2026-03-23 | 2.7M | — | -52.3% |