PACS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
PACS dark pool volume for the week of 2026-07-06: 1.3M shares traded across 26 ATS venues with a total notional value of $57.1M. Volume is down 8.9% week-over-week. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in PACS 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 PACS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.3M | — | -8.9% |
| 2026-06-29 | 1.4M | — | +4.9% |
| 2026-06-22 | 1.3M | — | +51.9% |
| 2026-06-15 | 887.3K | — | -37.3% |
| 2026-06-08 | 1.4M | — | +9.2% |
| 2026-06-01 | 1.3M | — | +68.1% |
| 2026-05-25 | 770.8K | — | -36.3% |
| 2026-05-18 | 1.2M | — | -45.2% |
| 2026-05-11 | 2.2M | — | +248.0% |
| 2026-05-04 | 634.5K | — | -37.7% |
| 2026-04-27 | 1.0M | — | — |
| 2026-03-23 | 1.0M | — | +32.1% |