PNW Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
PNW dark pool volume for the week of 2026-07-20: 1.9M shares traded across 25 ATS venues with a total notional value of $198.9M. Volume is up 41.4% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in PNW 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 PNW.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 1.9M | — | +41.4% |
| 2026-07-13 | 1.3M | — | +2.3% |
| 2026-07-06 | 1.3M | — | -15.1% |
| 2026-06-29 | 1.5M | — | -18.7% |
| 2026-06-22 | 1.9M | — | +134.3% |
| 2026-06-15 | 801.7K | — | -54.1% |
| 2026-06-08 | 1.7M | — | -2.5% |
| 2026-06-01 | 1.8M | — | +112.5% |
| 2026-05-25 | 843.3K | — | -43.7% |
| 2026-05-18 | 1.5M | — | +2.2% |
| 2026-05-11 | 1.5M | — | -26.9% |
| 2026-05-04 | 2.0M | — | +42.7% |