PDI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PDI dark pool volume for the week of 2026-07-06: 2.0M shares traded across 24 ATS venues with a total notional value of $34.1M. Volume is up 73.8% week-over-week. Primary routing venues include , UBS ATS, CROSSSTREAM.
Dark pool activity in PDI 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 PDI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 2.0M | — | +73.8% |
| 2026-06-29 | 1.2M | — | -32.6% |
| 2026-06-22 | 1.7M | — | +30.9% |
| 2026-06-15 | 1.3M | — | +8.8% |
| 2026-06-08 | 1.2M | — | -34.6% |
| 2026-06-01 | 1.9M | — | +51.4% |
| 2026-05-25 | 1.2M | — | -8.3% |
| 2026-05-18 | 1.3M | — | -14.7% |
| 2026-05-11 | 1.6M | — | -26.6% |
| 2026-05-04 | 2.1M | — | +51.1% |
| 2026-04-27 | 1.4M | — | — |
| 2026-03-23 | 1.7M | — | +20.6% |