Z Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
Z dark pool volume for the week of 2026-07-20: 4.7M shares traded across 27 ATS venues with a total notional value of $148.6M. Volume is up 22.7% week-over-week. Off-exchange dark pool transactions account for 16.8% of total Z 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 Z 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 Z.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 4.7M | 16.8% | +22.7% |
| 2026-07-13 | 3.9M | — | -16.5% |
| 2026-07-06 | 4.6M | — | +4.7% |
| 2026-06-29 | 4.4M | — | +0.1% |
| 2026-06-22 | 4.4M | — | +3.6% |
| 2026-06-15 | 4.3M | — | -33.3% |
| 2026-06-08 | 6.4M | — | +40.8% |
| 2026-06-01 | 4.5M | — | +24.3% |
| 2026-05-25 | 3.6M | — | -28.4% |
| 2026-05-18 | 5.1M | — | +40.3% |
| 2026-05-11 | 3.6M | — | -38.9% |
| 2026-05-04 | 5.9M | — | +149.6% |