MMS Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
MMS dark pool volume for the week of 2026-07-06: 711.8K shares traded across 23 ATS venues with a total notional value of $40.3M. Volume is down 8.7% week-over-week. Primary routing venues include , INSTINCT X, INTELLIGENT CROSS LLC.
Dark pool activity in MMS 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 MMS.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 711.8K | — | -8.7% |
| 2026-06-29 | 779.6K | — | -29.6% |
| 2026-06-22 | 1.1M | — | +59.9% |
| 2026-06-15 | 692.4K | — | +16.6% |
| 2026-06-08 | 594.1K | — | -12.7% |
| 2026-06-01 | 680.1K | — | +3.7% |
| 2026-05-25 | 656.1K | — | -53.8% |
| 2026-05-18 | 1.4M | — | -18.7% |
| 2026-05-11 | 1.7M | — | +7.9% |
| 2026-05-04 | 1.6M | — | +28.8% |
| 2026-04-27 | 1.3M | — | — |
| 2026-03-23 | 920.0K | — | -15.8% |