IBB Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
IBB dark pool volume for the week of 2026-07-20: 1.1M shares traded across 24 ATS venues with a total notional value of $213.9M. Volume is down 15.6% week-over-week. Primary routing venues include , UBS ATS, SIGMA X2.
Dark pool activity in IBB 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 IBB.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 1.1M | — | -15.6% |
| 2026-07-13 | 1.3M | — | -14.7% |
| 2026-07-06 | 1.6M | — | +26.4% |
| 2026-06-29 | 1.2M | — | -40.0% |
| 2026-06-22 | 2.1M | — | +135.3% |
| 2026-06-15 | 883.5K | — | -41.6% |
| 2026-06-08 | 1.5M | — | -5.9% |
| 2026-06-01 | 1.6M | — | +83.7% |
| 2026-05-25 | 874.8K | — | -59.4% |
| 2026-05-18 | 2.2M | — | +11.8% |
| 2026-05-11 | 1.9M | — | +2.4% |
| 2026-05-04 | 1.9M | — | -0.8% |