XLU Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
XLU dark pool volume for the week of 2026-07-20: 15.0M shares traded across 26 ATS venues with a total notional value of $684.3M. Volume is down 2.3% week-over-week. Off-exchange dark pool transactions account for 12.1% of total XLU market volume — within the normal institutional baseline range. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in XLU 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 XLU.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 15.0M | 12.1% | -2.3% |
| 2026-07-13 | 15.4M | 12.4% | +16.4% |
| 2026-07-06 | 13.2M | — | -12.4% |
| 2026-06-29 | 15.1M | — | -18.6% |
| 2026-06-22 | 18.5M | — | +16.6% |
| 2026-06-15 | 15.9M | 15.8% | -13.8% |
| 2026-06-08 | 18.4M | 18.3% | -19.0% |
| 2026-06-01 | 22.7M | 24.1% | +69.1% |
| 2026-05-25 | 13.4M | 14.2% | -30.2% |
| 2026-05-18 | 19.3M | 20.4% | -14.5% |
| 2026-05-11 | 22.5M | 23.9% | +20.9% |
| 2026-05-04 | 18.7M | 19.8% | +37.0% |