HYD Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
HYD dark pool volume for the week of 2026-07-20: 457.2K shares traded across 21 ATS venues with a total notional value of $23.1M. Volume is up 58.6% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in HYD 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 HYD.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 457.2K | — | +58.6% |
| 2026-07-13 | 288.4K | — | -35.5% |
| 2026-07-06 | 447.1K | — | -21.3% |
| 2026-06-29 | 567.7K | — | +97.6% |
| 2026-06-22 | 287.3K | — | -0.2% |
| 2026-06-15 | 287.7K | — | -47.0% |
| 2026-06-08 | 542.8K | — | -50.2% |
| 2026-06-01 | 1.1M | — | +65.7% |
| 2026-05-25 | 657.9K | — | +83.2% |
| 2026-05-18 | 359.1K | — | -18.8% |
| 2026-05-11 | 442.1K | — | +6.5% |
| 2026-05-04 | 415.3K | — | -45.8% |