IOO Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
IOO dark pool volume for the week of 2026-07-20: 418.5K shares traded across 22 ATS venues with a total notional value of $58.0M. Volume is up 285.9% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in IOO 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 IOO.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 418.5K | — | +285.9% |
| 2026-07-13 | 108.5K | — | +114.2% |
| 2026-07-06 | 50.6K | — | -70.7% |
| 2026-06-29 | 173.1K | — | +299.6% |
| 2026-06-22 | 43.3K | — | +31.3% |
| 2026-06-15 | 33.0K | — | -36.5% |
| 2026-06-08 | 51.9K | — | -17.8% |
| 2026-06-01 | 63.2K | — | -15.9% |
| 2026-05-25 | 75.2K | — | +10.7% |
| 2026-05-18 | 68.0K | — | -34.2% |
| 2026-05-11 | 103.3K | — | +89.5% |
| 2026-05-04 | 54.5K | — | -62.9% |