ZLAB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
ZLAB dark pool volume for the week of 2026-07-06: 1.2M shares traded across 26 ATS venues with a total notional value of $22.7M. Volume is up 64.6% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in ZLAB 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 ZLAB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 1.2M | — | +64.6% |
| 2026-06-29 | 701.8K | — | -61.7% |
| 2026-06-22 | 1.8M | — | +153.6% |
| 2026-06-15 | 722.7K | — | -58.7% |
| 2026-06-08 | 1.8M | — | -3.7% |
| 2026-06-01 | 1.8M | — | +81.2% |
| 2026-05-25 | 1.0M | — | -28.0% |
| 2026-05-18 | 1.4M | — | +16.7% |
| 2026-05-11 | 1.2M | — | +9.0% |
| 2026-05-04 | 1.1M | — | +110.1% |
| 2026-04-27 | 521.6K | — | — |
| 2026-03-23 | 1.2M | — | +10.6% |