MWH Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
MWH dark pool volume for the week of 2026-07-20: 3.1M shares traded across 27 ATS venues with a total notional value of $86.3M. Volume is down 25.4% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in MWH 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 MWH.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 3.1M | — | -25.4% |
| 2026-07-13 | 4.1M | — | +66.9% |
| 2026-07-06 | 2.5M | — | +5.8% |
| 2026-06-29 | 2.3M | — | -19.9% |
| 2026-06-22 | 2.9M | — | +58.6% |
| 2026-06-15 | 1.8M | — | -32.4% |
| 2026-06-08 | 2.7M | — | -37.0% |
| 2026-06-01 | 4.3M | — | -13.1% |
| 2026-05-25 | 4.9M | — | +125.2% |
| 2026-05-18 | 2.2M | — | -20.6% |
| 2026-05-11 | 2.8M | — | +42.0% |
| 2026-05-04 | 1.9M | — | +33.2% |