IGSB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
IGSB dark pool volume for the week of 2026-07-20: 1.2M shares traded across 21 ATS venues with a total notional value of $62.2M. Volume is down 2.1% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, UBS ATS.
Dark pool activity in IGSB 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 IGSB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 1.2M | — | -2.1% |
| 2026-07-13 | 1.2M | — | -14.3% |
| 2026-07-06 | 1.4M | — | -45.5% |
| 2026-06-29 | 2.6M | — | +102.0% |
| 2026-06-22 | 1.3M | — | +41.7% |
| 2026-06-15 | 912.6K | — | -29.4% |
| 2026-06-08 | 1.3M | — | +32.4% |
| 2026-06-01 | 976.5K | — | -13.8% |
| 2026-05-25 | 1.1M | — | -13.3% |
| 2026-05-18 | 1.3M | — | -13.8% |
| 2026-05-11 | 1.5M | — | +0.7% |
| 2026-05-04 | 1.5M | — | -5.7% |