MAG Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-09-01
MAG dark pool volume for the week of 2025-09-01: 272.1K shares traded across 20 ATS venues with a total notional value of $6.7M. Volume is down 63.7% week-over-week. Primary routing venues include , UBS ATS, SIGMA X2.
Dark pool activity in MAG 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 MAG.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-09-01 | 272.1K | — | -63.7% |
| 2025-08-25 | 750.2K | — | -33.9% |
| 2025-08-18 | 1.1M | — | -21.4% |
| 2025-08-11 | 1.4M | — | +66.7% |
| 2025-08-04 | 865.1K | — | +53.4% |
| 2025-07-28 | 564.0K | — | +17.2% |
| 2025-07-21 | 481.2K | — | -22.5% |
| 2025-07-14 | 620.7K | — | -24.3% |
| 2025-07-07 | 820.1K | — | +53.8% |
| 2025-06-30 | 533.2K | — | -43.7% |
| 2025-06-23 | 946.6K | — | -19.4% |
| 2025-06-16 | 1.2M | — | +52.7% |