WMB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
WMB dark pool volume for the week of 2026-07-20: 7.1M shares traded across 29 ATS venues with a total notional value of $525.5M. Volume is down 29.3% week-over-week. Off-exchange dark pool transactions account for 19.2% of total WMB market volume — elevated above the typical 10–14% institutional baseline, potentially signaling active accumulation or distribution. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in WMB 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 WMB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 7.1M | 19.2% | -29.3% |
| 2026-07-13 | 10.0M | 27.1% | +67.9% |
| 2026-07-06 | 5.9M | — | -37.9% |
| 2026-06-29 | 9.6M | — | +9.5% |
| 2026-06-22 | 8.7M | — | +47.8% |
| 2026-06-15 | 5.9M | — | +12.1% |
| 2026-06-08 | 5.3M | — | -19.2% |
| 2026-06-01 | 6.5M | 15.8% | +3.7% |
| 2026-05-25 | 6.3M | 15.2% | -16.6% |
| 2026-05-18 | 7.6M | 18.2% | -19.6% |
| 2026-05-11 | 9.4M | 22.7% | -2.7% |
| 2026-05-04 | 9.7M | 23.3% | +22.9% |