GLSI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
GLSI dark pool volume for the week of 2026-07-06: 145.8K shares traded across 23 ATS venues with a total notional value of $3.0M. Volume is up 105.9% week-over-week. Primary routing venues include , ONECHRONOS, INTELLIGENT CROSS LLC.
Dark pool activity in GLSI 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 GLSI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 145.8K | — | +105.9% |
| 2026-06-29 | 70.8K | — | -29.8% |
| 2026-06-22 | 100.9K | — | +133.1% |
| 2026-06-15 | 43.3K | — | -38.6% |
| 2026-06-08 | 70.5K | — | -46.6% |
| 2026-06-01 | 132.2K | — | +99.2% |
| 2026-05-25 | 66.4K | — | +82.5% |
| 2026-05-18 | 36.4K | — | -71.6% |
| 2026-05-11 | 128.3K | — | +74.0% |
| 2026-05-04 | 73.7K | — | +40.7% |
| 2026-04-27 | 52.4K | — | — |
| 2026-03-23 | 68.0K | — | -44.9% |