POOL Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
POOL dark pool volume for the week of 2026-07-20: 2.4M shares traded across 27 ATS venues with a total notional value of $469.9M. Volume is up 71.2% week-over-week. Primary routing venues include , SIGMA X2, UBS ATS.
Dark pool activity in POOL 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 POOL.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 2.4M | — | +71.2% |
| 2026-07-13 | 1.4M | — | +19.2% |
| 2026-07-06 | 1.2M | — | +47.1% |
| 2026-06-29 | 810.2K | — | -44.1% |
| 2026-06-22 | 1.4M | — | +4.1% |
| 2026-06-15 | 1.4M | — | -33.7% |
| 2026-06-08 | 2.1M | — | +18.3% |
| 2026-06-01 | 1.8M | — | +117.3% |
| 2026-05-25 | 816.1K | — | -37.2% |
| 2026-05-18 | 1.3M | — | -11.1% |
| 2026-05-11 | 1.5M | — | -33.0% |
| 2026-05-04 | 2.2M | — | +76.6% |