IAS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-12-22
IAS dark pool volume for the week of 2025-12-22: 2.6M shares traded across 23 ATS venues with a total notional value of $27.3M. Volume is up 181.2% week-over-week. Primary routing venues include , SIGMA X2, UBS ATS.
Dark pool activity in IAS 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 IAS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-12-22 | 2.6M | — | +181.2% |
| 2025-12-15 | 941.5K | — | +7.4% |
| 2025-12-08 | 876.3K | — | -68.5% |
| 2025-12-01 | 2.8M | — | +118.2% |
| 2025-11-24 | 1.3M | — | -38.9% |
| 2025-11-17 | 2.1M | — | +30.9% |
| 2025-11-10 | 1.6M | — | +11.5% |
| 2025-11-03 | 1.4M | — | — |
| 2025-10-20 | 1.1M | — | -17.0% |
| 2025-10-13 | 1.3M | — | -81.1% |
| 2025-10-06 | 6.8M | — | +21.6% |
| 2025-09-29 | 5.6M | — | -69.4% |