MLSS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
MLSS dark pool volume for the week of 2026-07-06: 81.6K shares traded across 16 ATS venues with a total notional value of $29K. Volume is up 37.1% week-over-week. Primary routing venues include , CROSSSTREAM, IBKR ATS.
Dark pool activity in MLSS 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 MLSS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 81.6K | — | +37.1% |
| 2026-06-29 | 59.5K | — | -54.8% |
| 2026-06-22 | 131.6K | — | +119.5% |
| 2026-06-15 | 60.0K | — | -27.8% |
| 2026-06-08 | 83.0K | — | +100.3% |
| 2026-06-01 | 41.4K | — | -28.8% |
| 2026-05-25 | 58.2K | — | -73.0% |
| 2026-05-18 | 215.7K | — | -57.0% |
| 2026-05-11 | 501.6K | — | +212.1% |
| 2026-05-04 | 160.7K | — | -41.2% |
| 2026-04-27 | 273.2K | — | — |
| 2026-03-23 | 34.9K | — | +52.3% |