ZS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
ZS dark pool volume for the week of 2026-07-20: 2.3M shares traded across 28 ATS venues with a total notional value of $329.0M. Volume is down 21.9% week-over-week. Primary routing venues include , UBS ATS, INTELLIGENT CROSS LLC.
Dark pool activity in ZS 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 ZS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 2.3M | — | -21.9% |
| 2026-07-13 | 2.9M | — | -23.1% |
| 2026-07-06 | 3.8M | — | +30.1% |
| 2026-06-29 | 2.9M | — | -7.5% |
| 2026-06-22 | 3.1M | — | -7.2% |
| 2026-06-15 | 3.4M | — | -33.9% |
| 2026-06-08 | 5.1M | — | -30.5% |
| 2026-06-01 | 7.3M | 57.0% | -39.6% |
| 2026-05-25 | 12.2M | 94.6% | +110.3% |
| 2026-05-18 | 5.8M | — | -0.5% |
| 2026-05-11 | 5.8M | — | +60.7% |
| 2026-05-04 | 3.6M | — | +16.4% |