PBM Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PBM dark pool volume for the week of 2026-07-06: 5.6K shares traded across 14 ATS venues with a total notional value of $17K. Volume is down 16.8% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, CROSSSTREAM.
Dark pool activity in PBM 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 PBM.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 5.6K | — | -16.8% |
| 2026-06-29 | 6.7K | — | -46.6% |
| 2026-06-22 | 12.6K | — | +16.7% |
| 2026-06-15 | 10.8K | — | +7.8% |
| 2026-06-08 | 10.0K | — | -68.4% |
| 2026-06-01 | 31.7K | — | +118.0% |
| 2026-05-25 | 14.5K | — | -39.8% |
| 2026-05-18 | 24.1K | — | -34.1% |
| 2026-05-11 | 36.6K | — | -26.0% |
| 2026-05-04 | 49.5K | — | -79.2% |
| 2026-04-27 | 237.4K | — | — |
| 2026-03-23 | 2.4K | — | -56.8% |