PRI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
PRI dark pool volume for the week of 2026-07-20: 184.5K shares traded across 24 ATS venues with a total notional value of $57.2M. Volume is down 23.7% week-over-week. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in PRI 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 PRI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 184.5K | — | -23.7% |
| 2026-07-13 | 241.7K | — | +13.1% |
| 2026-07-06 | 213.7K | — | +8.3% |
| 2026-06-29 | 197.3K | — | -39.3% |
| 2026-06-22 | 324.9K | — | +47.2% |
| 2026-06-15 | 220.7K | — | -26.7% |
| 2026-06-08 | 300.9K | — | -7.4% |
| 2026-06-01 | 324.9K | — | +90.3% |
| 2026-05-25 | 170.8K | — | -17.5% |
| 2026-05-18 | 207.1K | — | -13.8% |
| 2026-05-11 | 240.2K | — | -25.1% |
| 2026-05-04 | 320.7K | — | +6.2% |