PRPH Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-12-29
PRPH dark pool volume for the week of 2025-12-29: 426.9K shares traded across 23 ATS venues with a total notional value of $159K. Volume is up 44.3% week-over-week. Primary routing venues include , IBKR ATS, BOATS.
Dark pool activity in PRPH 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 PRPH.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-12-29 | 426.9K | — | +44.3% |
| 2025-12-22 | 295.9K | — | -91.3% |
| 2025-12-15 | 3.4M | — | +1181.3% |
| 2025-12-08 | 264.1K | — | -77.6% |
| 2025-12-01 | 1.2M | — | +1948.6% |
| 2025-11-24 | 57.6K | — | -51.9% |
| 2025-11-17 | 119.6K | — | -3.4% |
| 2025-11-10 | 123.9K | — | -5.3% |
| 2025-11-03 | 130.9K | — | — |
| 2025-10-20 | 201.8K | — | -2.3% |
| 2025-10-13 | 206.5K | — | +0.2% |
| 2025-10-06 | 206.1K | — | +11.1% |