SWI Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-04-14
SWI dark pool volume for the week of 2025-04-14: 815.8K shares traded across 22 ATS venues with a total notional value of $15.1M. Volume is down 81.8% week-over-week. Primary routing venues include , MS POOL (ATS-4), ONECHRONOS.
Dark pool activity in SWI 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 6-week historical volume and complete venue breakdown for SWI.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-04-14 | 815.8K | — | -81.8% |
| 2025-04-07 | 4.5M | — | +66.5% |
| 2025-03-31 | 2.7M | — | +101.2% |
| 2025-03-24 | 1.3M | — | +10.6% |
| 2025-03-17 | 1.2M | — | -42.3% |
| 2025-03-10 | 2.1M | — | — |