NMM Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-06
NMM dark pool volume for the week of 2026-07-06: 137.2K shares traded across 21 ATS venues with a total notional value of $10.3M. Volume is up 31.7% week-over-week. Primary routing venues include , UBS ATS, MS POOL (ATS-4).
Dark pool activity in NMM 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 NMM.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-06 | 137.2K | — | +31.7% |
| 2026-06-29 | 104.2K | — | -9.2% |
| 2026-06-22 | 114.7K | — | +43.2% |
| 2026-06-15 | 80.1K | — | -29.3% |
| 2026-06-08 | 113.2K | — | +7.6% |
| 2026-06-01 | 105.3K | — | -4.6% |
| 2026-05-25 | 110.3K | — | -55.4% |
| 2026-05-18 | 247.4K | — | +185.2% |
| 2026-05-11 | 86.8K | — | -47.8% |
| 2026-05-04 | 166.3K | — | +43.9% |
| 2026-04-27 | 115.5K | — | — |
| 2026-03-23 | 156.3K | — | -11.1% |