PDX Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PDX dark pool volume for the week of 2026-07-06: 61.6K shares traded across 19 ATS venues with a total notional value of $1.3M. Volume is down 31.6% week-over-week. Primary routing venues include , SIGMA X2, UBS ATS.
Dark pool activity in PDX 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 PDX.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 61.6K | — | -31.6% |
| 2026-06-29 | 90.0K | — | +40.2% |
| 2026-06-22 | 64.2K | — | +225.4% |
| 2026-06-15 | 19.7K | — | -53.2% |
| 2026-06-08 | 42.1K | — | -28.8% |
| 2026-06-01 | 59.2K | — | +73.1% |
| 2026-05-25 | 34.2K | — | -35.3% |
| 2026-05-18 | 52.8K | — | +47.4% |
| 2026-05-11 | 35.8K | — | -50.0% |
| 2026-05-04 | 71.6K | — | +4.9% |
| 2026-04-27 | 68.3K | — | — |
| 2026-03-23 | 281.7K | — | +222.7% |