GBIO Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-02-02
GBIO dark pool volume for the week of 2026-02-02: 163.6K shares traded across 21 ATS venues with a total notional value of $916K. Volume is up 82.0% week-over-week. Primary routing venues include , SIGMA X2, UBS ATS.
Dark pool activity in GBIO 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 GBIO.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-02-02 | 163.6K | — | +82.0% |
| 2026-01-26 | 89.9K | — | -60.0% |
| 2026-01-19 | 224.8K | — | +288.1% |
| 2026-01-12 | 57.9K | — | +32.3% |
| 2026-01-05 | 43.8K | — | -33.8% |
| 2025-12-29 | 66.1K | — | +141.5% |
| 2025-12-22 | 27.4K | — | -67.9% |
| 2025-12-15 | 85.2K | — | +429.5% |
| 2025-12-08 | 16.1K | — | -69.5% |
| 2025-12-01 | 52.8K | — | +183.2% |
| 2025-11-24 | 18.6K | — | -79.6% |
| 2025-11-17 | 91.5K | — | +9.3% |